<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019e2245-a348-7136-afee-f5e8f90fada2,g:c2cddc36-c86d-421a-ae47-452358ac7d71-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.lithia.com/role/CONSOLIDATEDBALANCESHEETS" xlink:type="simple" xlink:href="lad-20260630.xsd#CONSOLIDATEDBALANCESHEETS"/>
  <link:definitionLink xlink:role="http://www.lithia.com/role/CONSOLIDATEDBALANCESHEETS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019e2245-a4d7-7fbb-9613-92218ce99954" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_019e2245-a4d7-7777-8e03-a1faedcb8d67" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_019e2245-a4d7-7fbb-9613-92218ce99954" xlink:to="loc_us-gaap_StatementTable_019e2245-a4d7-7777-8e03-a1faedcb8d67" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019e2245-a4d7-7e01-9e8d-0a3c9081dc73" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019e2245-a4d7-7777-8e03-a1faedcb8d67" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019e2245-a4d7-7e01-9e8d-0a3c9081dc73" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e2245-a4d7-7e01-9e8d-0a3c9081dc73_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e2245-a4d7-7e01-9e8d-0a3c9081dc73" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e2245-a4d7-7e01-9e8d-0a3c9081dc73_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e2245-a4d7-7e97-a2b4-505cfa6dbd2d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e2245-a4d7-7e01-9e8d-0a3c9081dc73" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e2245-a4d7-7e97-a2b4-505cfa6dbd2d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_DebtExcludingNotesPayableMember_019e2245-a4d7-7d00-8dad-ff1f66d6b99e" xlink:href="lad-20260630.xsd#lad_DebtExcludingNotesPayableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e2245-a4d7-7e97-a2b4-505cfa6dbd2d" xlink:to="loc_lad_DebtExcludingNotesPayableMember_019e2245-a4d7-7d00-8dad-ff1f66d6b99e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesPayableOtherPayablesMember_019e2245-a4d7-7a1f-8845-47e0e63df0f3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesPayableOtherPayablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e2245-a4d7-7e97-a2b4-505cfa6dbd2d" xlink:to="loc_us-gaap_NotesPayableOtherPayablesMember_019e2245-a4d7-7a1f-8845-47e0e63df0f3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_019e2245-a4d7-7c0a-b512-db06dd6e707d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e2245-a4d7-7fbb-9613-92218ce99954" xlink:to="loc_us-gaap_AssetsAbstract_019e2245-a4d7-7c0a-b512-db06dd6e707d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrentAbstract_019e2245-a4d7-79f0-947c-5d82c64a2666" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e2245-a4d7-7c0a-b512-db06dd6e707d" xlink:to="loc_us-gaap_AssetsCurrentAbstract_019e2245-a4d7-79f0-947c-5d82c64a2666" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_CashRestrictedCashAndCashEquivalentsCurrent_019e2245-a4d7-741f-a001-ff4cd84db848" xlink:href="lad-20260630.xsd#lad_CashRestrictedCashAndCashEquivalentsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_019e2245-a4d7-79f0-947c-5d82c64a2666" xlink:to="loc_lad_CashRestrictedCashAndCashEquivalentsCurrent_019e2245-a4d7-741f-a001-ff4cd84db848" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_019e2245-a4d7-7c22-a0ee-d7ea657dd5a9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_019e2245-a4d7-79f0-947c-5d82c64a2666" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_019e2245-a4d7-7c22-a0ee-d7ea657dd5a9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_019e2245-a4d7-79d7-9faa-8d773294e71e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_019e2245-a4d7-79f0-947c-5d82c64a2666" xlink:to="loc_us-gaap_InventoryNet_019e2245-a4d7-79d7-9faa-8d773294e71e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsCurrent_019e2245-a4d7-7245-9613-56dcf7cf91bd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_019e2245-a4d7-79f0-947c-5d82c64a2666" xlink:to="loc_us-gaap_OtherAssetsCurrent_019e2245-a4d7-7245-9613-56dcf7cf91bd" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_019e2245-a4d7-7720-a602-de03237943ce" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_019e2245-a4d7-79f0-947c-5d82c64a2666" xlink:to="loc_us-gaap_AssetsCurrent_019e2245-a4d7-7720-a602-de03237943ce" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_019e2245-a4d7-7ba6-82c5-b5fa24f5c724" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e2245-a4d7-7c0a-b512-db06dd6e707d" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_019e2245-a4d7-7ba6-82c5-b5fa24f5c724" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_019e2245-a4d7-7701-9bd5-0f60ee52595d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e2245-a4d7-7c0a-b512-db06dd6e707d" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_019e2245-a4d7-7701-9bd5-0f60ee52595d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLossNoncurrent_019e2245-a4d7-7aec-8620-838d6994b76c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLossNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e2245-a4d7-7c0a-b512-db06dd6e707d" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLossNoncurrent_019e2245-a4d7-7aec-8620-838d6994b76c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_019e2245-a4d7-7a8f-a706-274dc7a1cc49" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e2245-a4d7-7c0a-b512-db06dd6e707d" xlink:to="loc_us-gaap_Goodwill_019e2245-a4d7-7a8f-a706-274dc7a1cc49" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedFranchiseRights_019e2245-a4d7-779b-8f35-fdc68c593f4e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IndefiniteLivedFranchiseRights"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e2245-a4d7-7c0a-b512-db06dd6e707d" xlink:to="loc_us-gaap_IndefiniteLivedFranchiseRights_019e2245-a4d7-779b-8f35-fdc68c593f4e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_019e2245-a4d7-71ed-b3cc-accd93754ad8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e2245-a4d7-7c0a-b512-db06dd6e707d" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_019e2245-a4d7-71ed-b3cc-accd93754ad8" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_019e2245-a4d7-7e80-8090-fdee70b63635" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019e2245-a4d7-7c0a-b512-db06dd6e707d" xlink:to="loc_us-gaap_Assets_019e2245-a4d7-7e80-8090-fdee70b63635" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e2245-a4d7-702d-95e6-8e3987c919aa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e2245-a4d7-7fbb-9613-92218ce99954" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e2245-a4d7-702d-95e6-8e3987c919aa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_019e2245-a4d7-7817-b260-a43f6bf08019" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e2245-a4d7-702d-95e6-8e3987c919aa" xlink:to="loc_us-gaap_LiabilitiesCurrentAbstract_019e2245-a4d7-7817-b260-a43f6bf08019" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_FloorPlanNotesPayable_019e2245-a4d7-797a-8bf7-f90e27d025cf" xlink:href="lad-20260630.xsd#lad_FloorPlanNotesPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_019e2245-a4d7-7817-b260-a43f6bf08019" xlink:to="loc_lad_FloorPlanNotesPayable_019e2245-a4d7-797a-8bf7-f90e27d025cf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_FloorPlanNotesPayableNonTrade_019e2245-a4d7-748d-bb00-ffc1eabc87c5" xlink:href="lad-20260630.xsd#lad_FloorPlanNotesPayableNonTrade"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_019e2245-a4d7-7817-b260-a43f6bf08019" xlink:to="loc_lad_FloorPlanNotesPayableNonTrade_019e2245-a4d7-748d-bb00-ffc1eabc87c5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_019e2245-a4d7-788c-aa8a-763274beeac8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_019e2245-a4d7-7817-b260-a43f6bf08019" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_019e2245-a4d7-788c-aa8a-763274beeac8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_019e2245-a4d7-746c-abe3-586b46e1ef16" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_019e2245-a4d7-7817-b260-a43f6bf08019" xlink:to="loc_us-gaap_AccountsPayableCurrent_019e2245-a4d7-746c-abe3-586b46e1ef16" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_019e2245-a4d7-73b0-80f7-3fe9555bbf76" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_019e2245-a4d7-7817-b260-a43f6bf08019" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent_019e2245-a4d7-73b0-80f7-3fe9555bbf76" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_019e2245-a4d7-7fd6-8379-5d1d23827d57" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_019e2245-a4d7-7817-b260-a43f6bf08019" xlink:to="loc_us-gaap_LiabilitiesCurrent_019e2245-a4d7-7fd6-8379-5d1d23827d57" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_019e2245-a4d7-74d9-b001-091aaea613e4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e2245-a4d7-702d-95e6-8e3987c919aa" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_019e2245-a4d7-74d9-b001-091aaea613e4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_019e2245-a4d7-7bd2-9984-e8c5b9685e2b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerLiabilityNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e2245-a4d7-702d-95e6-8e3987c919aa" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_019e2245-a4d7-7bd2-9984-e8c5b9685e2b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_019e2245-a4d7-7e85-bed6-d884bbca16c3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e2245-a4d7-702d-95e6-8e3987c919aa" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_019e2245-a4d7-7e85-bed6-d884bbca16c3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_019e2245-a4d7-7be4-8e50-c676ea740b2b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e2245-a4d7-702d-95e6-8e3987c919aa" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_019e2245-a4d7-7be4-8e50-c676ea740b2b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_019e2245-a4d7-7f6b-a199-aa7223c30136" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e2245-a4d7-702d-95e6-8e3987c919aa" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_019e2245-a4d7-7f6b-a199-aa7223c30136" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_019e2245-a4d7-70c2-b5dc-bec9f7fe843c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e2245-a4d7-702d-95e6-8e3987c919aa" xlink:to="loc_us-gaap_Liabilities_019e2245-a4d7-70c2-b5dc-bec9f7fe843c" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityAbstract_019e2245-a4d7-79c0-b83d-bb511fee1fdf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e2245-a4d7-702d-95e6-8e3987c919aa" xlink:to="loc_us-gaap_StockholdersEquityAbstract_019e2245-a4d7-79c0-b83d-bb511fee1fdf" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockValue_019e2245-a4d7-721c-81c1-b00a75d642fb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_019e2245-a4d7-79c0-b83d-bb511fee1fdf" xlink:to="loc_us-gaap_PreferredStockValue_019e2245-a4d7-721c-81c1-b00a75d642fb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_019e2245-a4d7-798b-bbce-c3c0b76dd3e4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_019e2245-a4d7-79c0-b83d-bb511fee1fdf" xlink:to="loc_us-gaap_CommonStockValue_019e2245-a4d7-798b-bbce-c3c0b76dd3e4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_019e2245-a4d7-77c2-a33e-36c13fb4b1d2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapitalCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_019e2245-a4d7-79c0-b83d-bb511fee1fdf" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_019e2245-a4d7-77c2-a33e-36c13fb4b1d2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_019e2245-a4d7-72cd-932a-c01a8a9b5450" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_019e2245-a4d7-79c0-b83d-bb511fee1fdf" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_019e2245-a4d7-72cd-932a-c01a8a9b5450" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019e2245-a4d7-7a82-95b3-f2d0d438d678" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_019e2245-a4d7-79c0-b83d-bb511fee1fdf" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019e2245-a4d7-7a82-95b3-f2d0d438d678" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019e2245-a4d7-79d1-aa45-ee3a4c30fe18" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_019e2245-a4d7-79c0-b83d-bb511fee1fdf" xlink:to="loc_us-gaap_StockholdersEquity_019e2245-a4d7-79d1-aa45-ee3a4c30fe18" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterest_019e2245-a4d7-78d8-b28c-d21f3a6c56d3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MinorityInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_019e2245-a4d7-79c0-b83d-bb511fee1fdf" xlink:to="loc_us-gaap_MinorityInterest_019e2245-a4d7-78d8-b28c-d21f3a6c56d3" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019e2245-a4d7-743c-816b-21bc61be2f20" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_019e2245-a4d7-79c0-b83d-bb511fee1fdf" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019e2245-a4d7-743c-816b-21bc61be2f20" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_019e2245-a4d7-7b8c-b17f-dd9a9ea34d1b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019e2245-a4d7-702d-95e6-8e3987c919aa" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_019e2245-a4d7-7b8c-b17f-dd9a9ea34d1b" xlink:type="arc" order="9"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lithia.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS" xlink:type="simple" xlink:href="lad-20260630.xsd#CONSOLIDATEDSTATEMENTSOFOPERATIONS"/>
  <link:definitionLink xlink:role="http://www.lithia.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019e2245-a4d7-7d5e-9e5d-627471e4f4df" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_019e2245-a4d7-7711-a299-a16380472707" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_019e2245-a4d7-7d5e-9e5d-627471e4f4df" xlink:to="loc_us-gaap_StatementTable_019e2245-a4d7-7711-a299-a16380472707" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019e2245-a4d7-7e93-865b-8ebd56816902" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019e2245-a4d7-7711-a299-a16380472707" xlink:to="loc_srt_ProductOrServiceAxis_019e2245-a4d7-7e93-865b-8ebd56816902" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019e2245-a4d7-7e93-865b-8ebd56816902_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_019e2245-a4d7-7e93-865b-8ebd56816902" xlink:to="loc_srt_ProductsAndServicesDomain_019e2245-a4d7-7e93-865b-8ebd56816902_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019e2245-a4d7-7f38-85dd-c130c8ac7ca7" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_019e2245-a4d7-7e93-865b-8ebd56816902" xlink:to="loc_srt_ProductsAndServicesDomain_019e2245-a4d7-7f38-85dd-c130c8ac7ca7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_NewVehicleMember_019e2245-a4d7-766b-ae42-bcc43a8af815" xlink:href="lad-20260630.xsd#lad_NewVehicleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e2245-a4d7-7f38-85dd-c130c8ac7ca7" xlink:to="loc_lad_NewVehicleMember_019e2245-a4d7-766b-ae42-bcc43a8af815" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_UsedVehicleMember_019e2245-a4d7-7ecc-b284-51a278345c54" xlink:href="lad-20260630.xsd#lad_UsedVehicleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e2245-a4d7-7f38-85dd-c130c8ac7ca7" xlink:to="loc_lad_UsedVehicleMember_019e2245-a4d7-7ecc-b284-51a278345c54" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_FinanceAndInsuranceMember_019e2245-a4d7-7f03-97e3-66735a872bbf" xlink:href="lad-20260630.xsd#lad_FinanceAndInsuranceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e2245-a4d7-7f38-85dd-c130c8ac7ca7" xlink:to="loc_lad_FinanceAndInsuranceMember_019e2245-a4d7-7f03-97e3-66735a872bbf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_AftersalesMember_019e2245-a4d7-72f8-a4a2-b197bf259063" xlink:href="lad-20260630.xsd#lad_AftersalesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e2245-a4d7-7f38-85dd-c130c8ac7ca7" xlink:to="loc_lad_AftersalesMember_019e2245-a4d7-72f8-a4a2-b197bf259063" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuesAbstract_019e2245-a4d7-7fe7-99fd-fcb3b2292c95" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenuesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e2245-a4d7-7d5e-9e5d-627471e4f4df" xlink:to="loc_us-gaap_RevenuesAbstract_019e2245-a4d7-7fe7-99fd-fcb3b2292c95" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019e2245-a4d7-7f6c-8f1c-fc97417135ca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_019e2245-a4d7-7fe7-99fd-fcb3b2292c95" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019e2245-a4d7-7f6c-8f1c-fc97417135ca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfRevenueAbstract_019e2245-a4d7-760e-b430-b16ff898cf34" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostOfRevenueAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e2245-a4d7-7d5e-9e5d-627471e4f4df" xlink:to="loc_us-gaap_CostOfRevenueAbstract_019e2245-a4d7-760e-b430-b16ff898cf34" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_019e2245-a4d7-7d51-8f4f-7d3156399752" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostOfRevenueAbstract_019e2245-a4d7-760e-b430-b16ff898cf34" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_019e2245-a4d7-7d51-8f4f-7d3156399752" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_019e2245-a4d7-7274-a536-830895ac4dfc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GrossProfit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e2245-a4d7-7d5e-9e5d-627471e4f4df" xlink:to="loc_us-gaap_GrossProfit_019e2245-a4d7-7274-a536-830895ac4dfc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherOperatingIncomeExpenseNet_019e2245-a4d7-7d2b-b89e-93f05c138a61" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherOperatingIncomeExpenseNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e2245-a4d7-7d5e-9e5d-627471e4f4df" xlink:to="loc_us-gaap_OtherOperatingIncomeExpenseNet_019e2245-a4d7-7d2b-b89e-93f05c138a61" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019e2245-a4d7-7b46-9f95-04fee828c86d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e2245-a4d7-7d5e-9e5d-627471e4f4df" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019e2245-a4d7-7b46-9f95-04fee828c86d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_019e2245-a4d7-7f93-ab35-66abca9b99de" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e2245-a4d7-7d5e-9e5d-627471e4f4df" xlink:to="loc_us-gaap_DepreciationAndAmortization_019e2245-a4d7-7f93-ab35-66abca9b99de" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019e2245-a4d7-7521-ae9a-473355a6a324" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e2245-a4d7-7d5e-9e5d-627471e4f4df" xlink:to="loc_us-gaap_OperatingIncomeLoss_019e2245-a4d7-7521-ae9a-473355a6a324" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_FloorPlanInterestExpense_019e2245-a4d7-7348-80bc-0094de1b356b" xlink:href="lad-20260630.xsd#lad_FloorPlanInterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e2245-a4d7-7d5e-9e5d-627471e4f4df" xlink:to="loc_lad_FloorPlanInterestExpense_019e2245-a4d7-7348-80bc-0094de1b356b" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseDebt_019e2245-a4d7-7eaa-9f30-23ff4b93b80b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e2245-a4d7-7d5e-9e5d-627471e4f4df" xlink:to="loc_us-gaap_InterestExpenseDebt_019e2245-a4d7-7eaa-9f30-23ff4b93b80b" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_019e2245-a4d7-7552-9dd3-5431fb174162" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e2245-a4d7-7d5e-9e5d-627471e4f4df" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_019e2245-a4d7-7552-9dd3-5431fb174162" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e2245-a4d7-7136-b099-05d65d6b10e2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e2245-a4d7-7d5e-9e5d-627471e4f4df" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e2245-a4d7-7136-b099-05d65d6b10e2" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_019e2245-a4d7-7b12-b199-4aad22660507" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e2245-a4d7-7d5e-9e5d-627471e4f4df" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_019e2245-a4d7-7b12-b199-4aad22660507" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_019e2245-a4d7-7252-8487-6d68ddd57ed7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e2245-a4d7-7d5e-9e5d-627471e4f4df" xlink:to="loc_us-gaap_ProfitLoss_019e2245-a4d7-7252-8487-6d68ddd57ed7" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNonredeemableNoncontrollingInterest_019e2245-a4d7-7ca2-beb3-df39b74325d4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLossAttributableToNonredeemableNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e2245-a4d7-7d5e-9e5d-627471e4f4df" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNonredeemableNoncontrollingInterest_019e2245-a4d7-7ca2-beb3-df39b74325d4" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019e2245-a4d7-7cb2-88cb-e061442fd65a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e2245-a4d7-7d5e-9e5d-627471e4f4df" xlink:to="loc_us-gaap_NetIncomeLoss_019e2245-a4d7-7cb2-88cb-e061442fd65a" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_019e2245-a4d7-70e3-8952-a9076661e485" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e2245-a4d7-7d5e-9e5d-627471e4f4df" xlink:to="loc_us-gaap_EarningsPerShareBasic_019e2245-a4d7-70e3-8952-a9076661e485" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019e2245-a4d7-789f-a506-6b3d52a5060d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e2245-a4d7-7d5e-9e5d-627471e4f4df" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019e2245-a4d7-789f-a506-6b3d52a5060d" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_019e2245-a4d7-75ea-b6d5-0c18697c1d8d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e2245-a4d7-7d5e-9e5d-627471e4f4df" xlink:to="loc_us-gaap_EarningsPerShareDiluted_019e2245-a4d7-75ea-b6d5-0c18697c1d8d" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019e2245-a4d7-720e-b76d-33582122c0d3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e2245-a4d7-7d5e-9e5d-627471e4f4df" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019e2245-a4d7-720e-b76d-33582122c0d3" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockDividendsPerShareCashPaid_019e2245-a4d7-7ead-b3ef-369e58bd5c5b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockDividendsPerShareCashPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e2245-a4d7-7d5e-9e5d-627471e4f4df" xlink:to="loc_us-gaap_CommonStockDividendsPerShareCashPaid_019e2245-a4d7-7ead-b3ef-369e58bd5c5b" xlink:type="arc" order="19"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lithia.com/role/CONSOLIDATEDSTATEMENTSOFEQUITY" xlink:type="simple" xlink:href="lad-20260630.xsd#CONSOLIDATEDSTATEMENTSOFEQUITY"/>
  <link:definitionLink xlink:role="http://www.lithia.com/role/CONSOLIDATEDSTATEMENTSOFEQUITY" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019e2245-a5aa-7298-897c-c50ce68f6bed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_019e2245-a5aa-7ddb-a81f-479c648d0d73" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_019e2245-a5aa-7298-897c-c50ce68f6bed" xlink:to="loc_us-gaap_StatementTable_019e2245-a5aa-7ddb-a81f-479c648d0d73" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019e2245-a5aa-75f5-a875-0205e1021124" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019e2245-a5aa-7ddb-a81f-479c648d0d73" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019e2245-a5aa-75f5-a875-0205e1021124" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019e2245-a5aa-75f5-a875-0205e1021124_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019e2245-a5aa-75f5-a875-0205e1021124" xlink:to="loc_us-gaap_EquityComponentDomain_019e2245-a5aa-75f5-a875-0205e1021124_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019e2245-a5aa-7b1d-ad42-92ad44898e0b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019e2245-a5aa-75f5-a875-0205e1021124" xlink:to="loc_us-gaap_EquityComponentDomain_019e2245-a5aa-7b1d-ad42-92ad44898e0b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_019e2245-a5aa-7d0e-a73c-3bfa6eb555da" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e2245-a5aa-7b1d-ad42-92ad44898e0b" xlink:to="loc_us-gaap_CommonStockMember_019e2245-a5aa-7d0e-a73c-3bfa6eb555da" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_019e2245-a5aa-7e9d-b4de-940d87b32556" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e2245-a5aa-7b1d-ad42-92ad44898e0b" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_019e2245-a5aa-7e9d-b4de-940d87b32556" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019e2245-a5aa-7567-a62d-9b467c55dcb2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e2245-a5aa-7b1d-ad42-92ad44898e0b" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019e2245-a5aa-7567-a62d-9b467c55dcb2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_019e2245-a5aa-737d-871f-46f1d2d04311" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e2245-a5aa-7b1d-ad42-92ad44898e0b" xlink:to="loc_us-gaap_RetainedEarningsMember_019e2245-a5aa-737d-871f-46f1d2d04311" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestMember_019e2245-a5aa-724d-806a-8096d60be102" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoncontrollingInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019e2245-a5aa-7b1d-ad42-92ad44898e0b" xlink:to="loc_us-gaap_NoncontrollingInterestMember_019e2245-a5aa-724d-806a-8096d60be102" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e2245-a5aa-727c-9185-8abf940b0295" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019e2245-a5aa-7298-897c-c50ce68f6bed" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e2245-a5aa-727c-9185-8abf940b0295" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019e2245-a5aa-7677-83b6-9e5d1aed8058" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e2245-a5aa-727c-9185-8abf940b0295" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019e2245-a5aa-7677-83b6-9e5d1aed8058" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockGrantedDuringPeriodValueSharebasedCompensation_019e2245-a5aa-7b65-8575-973bcccb394c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockGrantedDuringPeriodValueSharebasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e2245-a5aa-727c-9185-8abf940b0295" xlink:to="loc_us-gaap_StockGrantedDuringPeriodValueSharebasedCompensation_019e2245-a5aa-7b65-8575-973bcccb394c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_019e2245-a5aa-7b24-a7b7-f88c200a31e1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e2245-a5aa-727c-9185-8abf940b0295" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_019e2245-a5aa-7b24-a7b7-f88c200a31e1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_019e8601-a941-7daf-86b2-b58044727bd6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e2245-a5aa-727c-9185-8abf940b0295" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_019e8601-a941-7daf-86b2-b58044727bd6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_019e2245-a5aa-7306-9e6a-3e878036fb67" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e2245-a5aa-727c-9185-8abf940b0295" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_019e2245-a5aa-7306-9e6a-3e878036fb67" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_019e2245-a5aa-7e4f-aed2-56a337b311ff" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e2245-a5aa-727c-9185-8abf940b0295" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_019e2245-a5aa-7e4f-aed2-56a337b311ff" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_019e2245-a5aa-716d-9d44-650c2c6f7ad3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e2245-a5aa-727c-9185-8abf940b0295" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_019e2245-a5aa-716d-9d44-650c2c6f7ad3" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_019e2245-a5aa-703d-8e54-329b73c68474" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e2245-a5aa-727c-9185-8abf940b0295" xlink:to="loc_us-gaap_ProfitLoss_019e2245-a5aa-703d-8e54-329b73c68474" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Dividends_019e2245-a5aa-71b0-9377-3f41ae3a7ed4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Dividends"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e2245-a5aa-727c-9185-8abf940b0295" xlink:to="loc_us-gaap_Dividends_019e2245-a5aa-71b0-9377-3f41ae3a7ed4" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_019e2245-a5aa-7b26-8e59-d4ac36d995cd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019e2245-a5aa-727c-9185-8abf940b0295" xlink:to="loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_019e2245-a5aa-7b26-8e59-d4ac36d995cd" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019e2245-a5aa-7076-b296-635c8ebf1b60" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lithia.com/role/ACCOUNTSRECEIVABLEDetails" xlink:type="simple" xlink:href="lad-20260630.xsd#ACCOUNTSRECEIVABLEDetails"/>
  <link:definitionLink xlink:role="http://www.lithia.com/role/ACCOUNTSRECEIVABLEDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019e2245-a5aa-7581-b008-0f17cd3cb65c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019e2245-a5aa-7e44-8061-8f063ef1b2b1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019e2245-a5aa-7581-b008-0f17cd3cb65c" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019e2245-a5aa-7e44-8061-8f063ef1b2b1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_019e2245-a5aa-7329-b00f-bf566ca294b8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019e2245-a5aa-7e44-8061-8f063ef1b2b1" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_019e2245-a5aa-7329-b00f-bf566ca294b8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_019e2245-a5aa-7329-b00f-bf566ca294b8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_019e2245-a5aa-7329-b00f-bf566ca294b8" xlink:to="loc_us-gaap_ReceivableTypeDomain_019e2245-a5aa-7329-b00f-bf566ca294b8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_019e2245-a5aa-7934-a8fb-f685b87af5bd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_019e2245-a5aa-7329-b00f-bf566ca294b8" xlink:to="loc_us-gaap_ReceivableTypeDomain_019e2245-a5aa-7934-a8fb-f685b87af5bd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_ContractsInTransitMember_019e2245-a5aa-7fc7-8d97-da28b82a5480" xlink:href="lad-20260630.xsd#lad_ContractsInTransitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_019e2245-a5aa-7934-a8fb-f685b87af5bd" xlink:to="loc_lad_ContractsInTransitMember_019e2245-a5aa-7fc7-8d97-da28b82a5480" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_VehicleReceivablesMember_019e2245-a5aa-796c-80d4-1dea0bb01f2b" xlink:href="lad-20260630.xsd#lad_VehicleReceivablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_019e2245-a5aa-7934-a8fb-f685b87af5bd" xlink:to="loc_lad_VehicleReceivablesMember_019e2245-a5aa-796c-80d4-1dea0bb01f2b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_ManufacturerReceivablesMember_019e2245-a5aa-73f0-aae6-94b633b4badb" xlink:href="lad-20260630.xsd#lad_ManufacturerReceivablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_019e2245-a5aa-7934-a8fb-f685b87af5bd" xlink:to="loc_lad_ManufacturerReceivablesMember_019e2245-a5aa-73f0-aae6-94b633b4badb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeAccountsReceivableMember_019e2245-a5aa-7c71-ac1d-454ca219b2be" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TradeAccountsReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_019e2245-a5aa-7934-a8fb-f685b87af5bd" xlink:to="loc_us-gaap_TradeAccountsReceivableMember_019e2245-a5aa-7c71-ac1d-454ca219b2be" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_OtherCurrentReceivablesMember_019e2245-a5aa-7989-bb27-4d05c513dc71" xlink:href="lad-20260630.xsd#lad_OtherCurrentReceivablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_019e2245-a5aa-7934-a8fb-f685b87af5bd" xlink:to="loc_lad_OtherCurrentReceivablesMember_019e2245-a5aa-7989-bb27-4d05c513dc71" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableGrossCurrent_019e2245-a5aa-79e6-b7e3-0f33c8b1312d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableGrossCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019e2245-a5aa-7581-b008-0f17cd3cb65c" xlink:to="loc_us-gaap_AccountsReceivableGrossCurrent_019e2245-a5aa-79e6-b7e3-0f33c8b1312d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_019e2245-a5aa-7049-b1d9-73c3acbef9b9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019e2245-a5aa-7581-b008-0f17cd3cb65c" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_019e2245-a5aa-7049-b1d9-73c3acbef9b9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_019e2245-a5aa-7ddc-b455-6e91e24571fc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019e2245-a5aa-7581-b008-0f17cd3cb65c" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_019e2245-a5aa-7ddc-b455-6e91e24571fc" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lithia.com/role/INVENTORIESANDFLOORPLANNOTESPAYABLEScheduleofInventoriesDetails" xlink:type="simple" xlink:href="lad-20260630.xsd#INVENTORIESANDFLOORPLANNOTESPAYABLEScheduleofInventoriesDetails"/>
  <link:definitionLink xlink:role="http://www.lithia.com/role/INVENTORIESANDFLOORPLANNOTESPAYABLEScheduleofInventoriesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryLineItems_019e2245-a5aa-7b28-bb26-d99fc5b52211" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryCurrentTable_019e2245-a5aa-7323-a408-24f7ad7d0453" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryCurrentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_InventoryLineItems_019e2245-a5aa-7b28-bb26-d99fc5b52211" xlink:to="loc_us-gaap_InventoryCurrentTable_019e2245-a5aa-7323-a408-24f7ad7d0453" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesInventoryAxis_019e2245-a5aa-7f5e-9640-d636c3492c9f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PublicUtilitiesInventoryAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_InventoryCurrentTable_019e2245-a5aa-7323-a408-24f7ad7d0453" xlink:to="loc_us-gaap_PublicUtilitiesInventoryAxis_019e2245-a5aa-7f5e-9640-d636c3492c9f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesInventoryTypeDomain_019e2245-a5aa-7f5e-9640-d636c3492c9f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PublicUtilitiesInventoryTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PublicUtilitiesInventoryAxis_019e2245-a5aa-7f5e-9640-d636c3492c9f" xlink:to="loc_us-gaap_PublicUtilitiesInventoryTypeDomain_019e2245-a5aa-7f5e-9640-d636c3492c9f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesInventoryTypeDomain_019e2245-a5aa-78ad-a422-bb623926e8be" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PublicUtilitiesInventoryTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PublicUtilitiesInventoryAxis_019e2245-a5aa-7f5e-9640-d636c3492c9f" xlink:to="loc_us-gaap_PublicUtilitiesInventoryTypeDomain_019e2245-a5aa-78ad-a422-bb623926e8be" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_NewVehicleMember_019e2245-a5aa-7ac2-98cb-56a4bb2e9e0c" xlink:href="lad-20260630.xsd#lad_NewVehicleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesInventoryTypeDomain_019e2245-a5aa-78ad-a422-bb623926e8be" xlink:to="loc_lad_NewVehicleMember_019e2245-a5aa-7ac2-98cb-56a4bb2e9e0c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_UsedVehicleMember_019e2245-a5aa-7ab7-bc3f-affce01d97b5" xlink:href="lad-20260630.xsd#lad_UsedVehicleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesInventoryTypeDomain_019e2245-a5aa-78ad-a422-bb623926e8be" xlink:to="loc_lad_UsedVehicleMember_019e2245-a5aa-7ab7-bc3f-affce01d97b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_PartsAndAccessoriesMember_019e2245-a5aa-7ece-8c83-39d6278b2ce9" xlink:href="lad-20260630.xsd#lad_PartsAndAccessoriesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PublicUtilitiesInventoryTypeDomain_019e2245-a5aa-78ad-a422-bb623926e8be" xlink:to="loc_lad_PartsAndAccessoriesMember_019e2245-a5aa-7ece-8c83-39d6278b2ce9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_019e2245-a5aa-784c-bf9a-3969b721b161" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryLineItems_019e2245-a5aa-7b28-bb26-d99fc5b52211" xlink:to="loc_us-gaap_InventoryNet_019e2245-a5aa-784c-bf9a-3969b721b161" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lithia.com/role/FINANCERECEIVABLESNarrativeDetails" xlink:type="simple" xlink:href="lad-20260630.xsd#FINANCERECEIVABLESNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.lithia.com/role/FINANCERECEIVABLESNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019e2245-a5aa-7161-81aa-62148e44d6fd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019e2245-a5aa-7c00-87b2-84a0ace7434b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019e2245-a5aa-7161-81aa-62148e44d6fd" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019e2245-a5aa-7c00-87b2-84a0ace7434b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_019e2245-a5aa-7aff-9824-465bf718f36c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019e2245-a5aa-7c00-87b2-84a0ace7434b" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_019e2245-a5aa-7aff-9824-465bf718f36c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_019e2245-a5aa-7aff-9824-465bf718f36c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_019e2245-a5aa-7aff-9824-465bf718f36c" xlink:to="loc_us-gaap_ReceivableTypeDomain_019e2245-a5aa-7aff-9824-465bf718f36c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_019e2245-a5aa-7955-9fa6-aabcc30abf18" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_019e2245-a5aa-7aff-9824-465bf718f36c" xlink:to="loc_us-gaap_ReceivableTypeDomain_019e2245-a5aa-7955-9fa6-aabcc30abf18" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansReceivableMember_019e2245-a5aa-7ab0-9252-bd172d748127" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LoansReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_019e2245-a5aa-7955-9fa6-aabcc30abf18" xlink:to="loc_us-gaap_LoansReceivableMember_019e2245-a5aa-7ab0-9252-bd172d748127" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_019e2245-a5aa-7664-9551-cc315a86cf34" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019e2245-a5aa-7c00-87b2-84a0ace7434b" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_019e2245-a5aa-7664-9551-cc315a86cf34" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_019e2245-a5aa-7664-9551-cc315a86cf34_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_019e2245-a5aa-7664-9551-cc315a86cf34" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_019e2245-a5aa-7664-9551-cc315a86cf34_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_019e2245-a5aa-7928-afca-9bda703cefd7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_019e2245-a5aa-7664-9551-cc315a86cf34" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_019e2245-a5aa-7928-afca-9bda703cefd7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AutomobileLoanMember_019e2245-a5aa-7bcd-88ea-301e7fdb9fef" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AutomobileLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_019e2245-a5aa-7928-afca-9bda703cefd7" xlink:to="loc_us-gaap_AutomobileLoanMember_019e2245-a5aa-7bcd-88ea-301e7fdb9fef" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_FinancingReceivableLessThan60DaysPastDuePercent_019e2245-a5aa-7365-8ff4-67f558b1189d" xlink:href="lad-20260630.xsd#lad_FinancingReceivableLessThan60DaysPastDuePercent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019e2245-a5aa-7161-81aa-62148e44d6fd" xlink:to="loc_lad_FinancingReceivableLessThan60DaysPastDuePercent_019e2245-a5aa-7365-8ff4-67f558b1189d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableNonaccrualPercentPastDue1_019e2245-a5aa-7a34-9dbe-214b0727b547" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableNonaccrualPercentPastDue1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019e2245-a5aa-7161-81aa-62148e44d6fd" xlink:to="loc_us-gaap_FinancingReceivableNonaccrualPercentPastDue1_019e2245-a5aa-7a34-9dbe-214b0727b547" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableThresholdPeriodPastDue_019e2245-a5aa-7452-8fcd-9861db05a89a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableThresholdPeriodPastDue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019e2245-a5aa-7161-81aa-62148e44d6fd" xlink:to="loc_us-gaap_FinancingReceivableThresholdPeriodPastDue_019e2245-a5aa-7452-8fcd-9861db05a89a" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lithia.com/role/FINANCERECEIVABLESScheduleofFinanceReceivablesNetDetails" xlink:type="simple" xlink:href="lad-20260630.xsd#FINANCERECEIVABLESScheduleofFinanceReceivablesNetDetails"/>
  <link:definitionLink xlink:role="http://www.lithia.com/role/FINANCERECEIVABLESScheduleofFinanceReceivablesNetDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019e2245-a5aa-7a6e-b84f-bec84232ea76" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019e2245-a5aa-7e53-8142-b8481973273c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019e2245-a5aa-7a6e-b84f-bec84232ea76" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019e2245-a5aa-7e53-8142-b8481973273c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_019e2245-a5aa-7749-ad25-b14e63534dfc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019e2245-a5aa-7e53-8142-b8481973273c" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_019e2245-a5aa-7749-ad25-b14e63534dfc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_019e2245-a5aa-7749-ad25-b14e63534dfc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_019e2245-a5aa-7749-ad25-b14e63534dfc" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_019e2245-a5aa-7749-ad25-b14e63534dfc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_019e2245-a5aa-7173-aba2-86930f371f40" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_019e2245-a5aa-7749-ad25-b14e63534dfc" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_019e2245-a5aa-7173-aba2-86930f371f40" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_AssetBackedTermFundingMember_019e2245-a5aa-73c8-9f3f-552570e34619" xlink:href="lad-20260630.xsd#lad_AssetBackedTermFundingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_019e2245-a5aa-7173-aba2-86930f371f40" xlink:to="loc_lad_AssetBackedTermFundingMember_019e2245-a5aa-73c8-9f3f-552570e34619" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_WarehouseFacilitiesMember_019e2245-a5aa-7809-9389-12282336014e" xlink:href="lad-20260630.xsd#lad_WarehouseFacilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_019e2245-a5aa-7173-aba2-86930f371f40" xlink:to="loc_lad_WarehouseFacilitiesMember_019e2245-a5aa-7809-9389-12282336014e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_OtherManagedReceivablesMember_019e2245-a5aa-798e-840f-4200e7773ed1" xlink:href="lad-20260630.xsd#lad_OtherManagedReceivablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_019e2245-a5aa-7173-aba2-86930f371f40" xlink:to="loc_lad_OtherManagedReceivablesMember_019e2245-a5aa-798e-840f-4200e7773ed1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossNoncurrent_019e2245-a5aa-7f6b-a436-a7c205a1f949" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019e2245-a5aa-7a6e-b84f-bec84232ea76" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossNoncurrent_019e2245-a5aa-7f6b-a436-a7c205a1f949" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_InterestAndFeesReceivableNoncurrent_019e2245-a5aa-7f60-ae20-62baadef39a0" xlink:href="lad-20260630.xsd#lad_InterestAndFeesReceivableNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019e2245-a5aa-7a6e-b84f-bec84232ea76" xlink:to="loc_lad_InterestAndFeesReceivableNoncurrent_019e2245-a5aa-7f60-ae20-62baadef39a0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterestNoncurrent_019e2245-a5aa-7c75-8696-c02ea17ee67b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterestNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019e2245-a5aa-7a6e-b84f-bec84232ea76" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterestNoncurrent_019e2245-a5aa-7c75-8696-c02ea17ee67b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLossNoncurrent_019e2245-a5aa-748e-8edb-c2bdc6022959" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLossNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019e2245-a5aa-7a6e-b84f-bec84232ea76" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLossNoncurrent_019e2245-a5aa-748e-8edb-c2bdc6022959" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lithia.com/role/FINANCERECEIVABLESScheduleofFinanceReceivablesbyFICOScoreDetails" xlink:type="simple" xlink:href="lad-20260630.xsd#FINANCERECEIVABLESScheduleofFinanceReceivablesbyFICOScoreDetails"/>
  <link:definitionLink xlink:role="http://www.lithia.com/role/FINANCERECEIVABLESScheduleofFinanceReceivablesbyFICOScoreDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_019e2245-a5aa-7e8e-8da7-967337abf1b9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_019e2245-a5aa-7a9e-a9e6-d304a3172d62" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_019e2245-a5aa-7e8e-8da7-967337abf1b9" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_019e2245-a5aa-7a9e-a9e6-d304a3172d62" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditScoreFicoAxis_019e2245-a5aa-7116-a67f-5a6049888450" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditScoreFicoAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_019e2245-a5aa-7a9e-a9e6-d304a3172d62" xlink:to="loc_us-gaap_CreditScoreFicoAxis_019e2245-a5aa-7116-a67f-5a6049888450" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditScoreFicoDomain_019e2245-a5aa-7116-a67f-5a6049888450_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditScoreFicoDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditScoreFicoAxis_019e2245-a5aa-7116-a67f-5a6049888450" xlink:to="loc_us-gaap_CreditScoreFicoDomain_019e2245-a5aa-7116-a67f-5a6049888450_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditScoreFicoDomain_019e2245-a5aa-7005-a425-f9865abcfa12" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditScoreFicoDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditScoreFicoAxis_019e2245-a5aa-7116-a67f-5a6049888450" xlink:to="loc_us-gaap_CreditScoreFicoDomain_019e2245-a5aa-7005-a425-f9865abcfa12" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_FICOScoreLessThan599Member_019e2245-a5aa-77cd-98fd-f8ce242318ac" xlink:href="lad-20260630.xsd#lad_FICOScoreLessThan599Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditScoreFicoDomain_019e2245-a5aa-7005-a425-f9865abcfa12" xlink:to="loc_lad_FICOScoreLessThan599Member_019e2245-a5aa-77cd-98fd-f8ce242318ac" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FicoScore600To699Member_019e2245-a5aa-7522-8e31-977496e8f516" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FicoScore600To699Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditScoreFicoDomain_019e2245-a5aa-7005-a425-f9865abcfa12" xlink:to="loc_us-gaap_FicoScore600To699Member_019e2245-a5aa-7522-8e31-977496e8f516" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_FICOScore700To774Member_019e2245-a5aa-710b-9aed-4d566f3227a6" xlink:href="lad-20260630.xsd#lad_FICOScore700To774Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditScoreFicoDomain_019e2245-a5aa-7005-a425-f9865abcfa12" xlink:to="loc_lad_FICOScore700To774Member_019e2245-a5aa-710b-9aed-4d566f3227a6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_FICOScoreGreaterThan775Member_019e2245-a5aa-7964-9474-77b89e6f8baf" xlink:href="lad-20260630.xsd#lad_FICOScoreGreaterThan775Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditScoreFicoDomain_019e2245-a5aa-7005-a425-f9865abcfa12" xlink:to="loc_lad_FICOScoreGreaterThan775Member_019e2245-a5aa-7964-9474-77b89e6f8baf" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_019e2245-a5aa-74d6-9f0a-7b24c1416e7c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_019e2245-a5aa-7a9e-a9e6-d304a3172d62" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_019e2245-a5aa-74d6-9f0a-7b24c1416e7c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_019e2245-a5aa-74d6-9f0a-7b24c1416e7c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_019e2245-a5aa-74d6-9f0a-7b24c1416e7c" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_019e2245-a5aa-74d6-9f0a-7b24c1416e7c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_019e2245-a5aa-7c73-a006-4c582ea328d0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_019e2245-a5aa-74d6-9f0a-7b24c1416e7c" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_019e2245-a5aa-7c73-a006-4c582ea328d0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AutomobileLoanMember_019e2245-a5aa-7491-ada1-d06e22eab8bd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AutomobileLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_019e2245-a5aa-7c73-a006-4c582ea328d0" xlink:to="loc_us-gaap_AutomobileLoanMember_019e2245-a5aa-7491-ada1-d06e22eab8bd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_OtherFinanceReceivablesMember_019e2245-a5aa-7802-b83b-f06e8dd9da66" xlink:href="lad-20260630.xsd#lad_OtherFinanceReceivablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_019e2245-a5aa-7c73-a006-4c582ea328d0" xlink:to="loc_lad_OtherFinanceReceivablesMember_019e2245-a5aa-7802-b83b-f06e8dd9da66" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear_019e2245-a5aa-74ea-b48d-765357eb6aee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_019e2245-a5aa-7e8e-8da7-967337abf1b9" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear_019e2245-a5aa-74ea-b48d-765357eb6aee" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear_019e2245-a5aa-7212-b16d-7c3719ca786b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_019e2245-a5aa-7e8e-8da7-967337abf1b9" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear_019e2245-a5aa-7212-b16d-7c3719ca786b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear_019e2245-a5aa-7467-867d-721843f9ba67" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_019e2245-a5aa-7e8e-8da7-967337abf1b9" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear_019e2245-a5aa-7467-867d-721843f9ba67" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear_019e2245-a5aa-7f1e-b4e2-04a07cb8d20e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_019e2245-a5aa-7e8e-8da7-967337abf1b9" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear_019e2245-a5aa-7f1e-b4e2-04a07cb8d20e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear_019e2245-a5aa-7f74-997f-9b79856d7c19" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_019e2245-a5aa-7e8e-8da7-967337abf1b9" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear_019e2245-a5aa-7f74-997f-9b79856d7c19" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear_019e2245-a5aa-7b8a-bec5-a1a18e455a4a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_019e2245-a5aa-7e8e-8da7-967337abf1b9" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear_019e2245-a5aa-7b8a-bec5-a1a18e455a4a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossNoncurrent_019e2245-a5aa-7d31-bd6d-fc8d78a6f16c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_019e2245-a5aa-7e8e-8da7-967337abf1b9" xlink:to="loc_us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLossNoncurrent_019e2245-a5aa-7d31-bd6d-fc8d78a6f16c" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lithia.com/role/GOODWILLANDFRANCHISEVALUEScheduleofGoodwillDetails" xlink:type="simple" xlink:href="lad-20260630.xsd#GOODWILLANDFRANCHISEVALUEScheduleofGoodwillDetails"/>
  <link:definitionLink xlink:role="http://www.lithia.com/role/GOODWILLANDFRANCHISEVALUEScheduleofGoodwillDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillLineItems_019e2245-a5aa-77a3-91c9-af1bc3734fbe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_019e2245-a5aa-783c-af9b-fed7603ad8d2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfGoodwillTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GoodwillLineItems_019e2245-a5aa-77a3-91c9-af1bc3734fbe" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_019e2245-a5aa-783c-af9b-fed7603ad8d2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019e2245-a5aa-7465-b335-41caa7328545" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_019e2245-a5aa-783c-af9b-fed7603ad8d2" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019e2245-a5aa-7465-b335-41caa7328545" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e2245-a5aa-7465-b335-41caa7328545_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e2245-a5aa-7465-b335-41caa7328545" xlink:to="loc_us-gaap_SegmentDomain_019e2245-a5aa-7465-b335-41caa7328545_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e2245-a5aa-74cb-b010-918e31a870e4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e2245-a5aa-7465-b335-41caa7328545" xlink:to="loc_us-gaap_SegmentDomain_019e2245-a5aa-74cb-b010-918e31a870e4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_VehicleOperationsMember_019e2245-a5aa-797b-acae-ec03ddbfa041" xlink:href="lad-20260630.xsd#lad_VehicleOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e2245-a5aa-74cb-b010-918e31a870e4" xlink:to="loc_lad_VehicleOperationsMember_019e2245-a5aa-797b-acae-ec03ddbfa041" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_FinancingOperationsMember_019e2245-a5aa-77c7-858b-abe56f8f8cfd" xlink:href="lad-20260630.xsd#lad_FinancingOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e2245-a5aa-74cb-b010-918e31a870e4" xlink:to="loc_lad_FinancingOperationsMember_019e2245-a5aa-77c7-858b-abe56f8f8cfd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_019e2245-a5aa-7904-b9a1-cee383e297fb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_019e2245-a5aa-783c-af9b-fed7603ad8d2" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_019e2245-a5aa-7904-b9a1-cee383e297fb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e2245-a5aa-7904-b9a1-cee383e297fb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_019e2245-a5aa-7904-b9a1-cee383e297fb" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e2245-a5aa-7904-b9a1-cee383e297fb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e2245-a5aa-7989-bfdc-aad398f6cfd6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_019e2245-a5aa-7904-b9a1-cee383e297fb" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e2245-a5aa-7989-bfdc-aad398f6cfd6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_A2024AcquisitionMember_019e2245-a5aa-79fc-975c-986b534aed74" xlink:href="lad-20260630.xsd#lad_A2024AcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e2245-a5aa-7989-bfdc-aad398f6cfd6" xlink:to="loc_lad_A2024AcquisitionMember_019e2245-a5aa-79fc-975c-986b534aed74" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_A2025AcquisitionMember_019e2245-a5aa-7ceb-862b-fc99f8644b6c" xlink:href="lad-20260630.xsd#lad_A2025AcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e2245-a5aa-7989-bfdc-aad398f6cfd6" xlink:to="loc_lad_A2025AcquisitionMember_019e2245-a5aa-7ceb-862b-fc99f8644b6c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillRollForward_019e2245-a5aa-7f6b-a18a-617ed5257feb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_019e2245-a5aa-77a3-91c9-af1bc3734fbe" xlink:to="loc_us-gaap_GoodwillRollForward_019e2245-a5aa-7f6b-a18a-617ed5257feb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_019e2245-a5aa-7a4a-83f0-f638d3158295" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_019e2245-a5aa-7f6b-a18a-617ed5257feb" xlink:to="loc_us-gaap_Goodwill_019e2245-a5aa-7a4a-83f0-f638d3158295" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillAcquiredDuringPeriod_019e2245-a5aa-7ac4-9c2f-c94e0b66b6ad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillAcquiredDuringPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_019e2245-a5aa-7f6b-a18a-617ed5257feb" xlink:to="loc_us-gaap_GoodwillAcquiredDuringPeriod_019e2245-a5aa-7ac4-9c2f-c94e0b66b6ad" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit_019e2245-a5aa-773a-8e64-ce21e4022311" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_019e2245-a5aa-7f6b-a18a-617ed5257feb" xlink:to="loc_us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit_019e2245-a5aa-773a-8e64-ce21e4022311" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_019e2245-a5aa-7a7c-8052-49d7b33a759b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillForeignCurrencyTranslationGainLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_019e2245-a5aa-7f6b-a18a-617ed5257feb" xlink:to="loc_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_019e2245-a5aa-7a7c-8052-49d7b33a759b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_019e2245-a5aa-7c20-b53a-d3da26aabcf3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Goodwill"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lithia.com/role/GOODWILLANDFRANCHISEVALUEScheduleofFranchiseValueDetails" xlink:type="simple" xlink:href="lad-20260630.xsd#GOODWILLANDFRANCHISEVALUEScheduleofFranchiseValueDetails"/>
  <link:definitionLink xlink:role="http://www.lithia.com/role/GOODWILLANDFRANCHISEVALUEScheduleofFranchiseValueDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_019e2245-a5aa-7bac-a476-e55ac7e0c426" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_019e2245-a5aa-71c8-a9be-ed30aed03bd8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_019e2245-a5aa-7bac-a476-e55ac7e0c426" xlink:to="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_019e2245-a5aa-71c8-a9be-ed30aed03bd8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_019e2245-a5aa-7893-9aed-32676655c2e0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_019e2245-a5aa-71c8-a9be-ed30aed03bd8" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_019e2245-a5aa-7893-9aed-32676655c2e0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_019e2245-a5aa-7893-9aed-32676655c2e0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_019e2245-a5aa-7893-9aed-32676655c2e0" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_019e2245-a5aa-7893-9aed-32676655c2e0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_019e2245-a5aa-7f57-9b7d-bd4637fc7a06" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_019e2245-a5aa-7893-9aed-32676655c2e0" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_019e2245-a5aa-7f57-9b7d-bd4637fc7a06" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FranchiseRightsMember_019e2245-a5aa-7d9e-9d61-f719a0088ab6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FranchiseRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_019e2245-a5aa-7f57-9b7d-bd4637fc7a06" xlink:to="loc_us-gaap_FranchiseRightsMember_019e2245-a5aa-7d9e-9d61-f719a0088ab6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_019e2245-a5aa-7dee-afb1-6f1859eefcdf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_019e2245-a5aa-71c8-a9be-ed30aed03bd8" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_019e2245-a5aa-7dee-afb1-6f1859eefcdf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e2245-a5aa-7dee-afb1-6f1859eefcdf_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_019e2245-a5aa-7dee-afb1-6f1859eefcdf" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e2245-a5aa-7dee-afb1-6f1859eefcdf_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e2245-a5aa-72e1-95e4-046798f9150b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_019e2245-a5aa-7dee-afb1-6f1859eefcdf" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e2245-a5aa-72e1-95e4-046798f9150b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_A2024AcquisitionMember_019e2245-a5aa-7cdc-b97f-fdd6f25bcfd5" xlink:href="lad-20260630.xsd#lad_A2024AcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e2245-a5aa-72e1-95e4-046798f9150b" xlink:to="loc_lad_A2024AcquisitionMember_019e2245-a5aa-7cdc-b97f-fdd6f25bcfd5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_A2025AcquisitionMember_019e2245-a5aa-7216-b8d0-11b7bf88a902" xlink:href="lad-20260630.xsd#lad_A2025AcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e2245-a5aa-72e1-95e4-046798f9150b" xlink:to="loc_lad_A2025AcquisitionMember_019e2245-a5aa-7216-b8d0-11b7bf88a902" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_IndefiniteLivedIntangibleAssetImpairmentNumberOfUnderperformingStores_019e2245-a5aa-7b41-a213-91239b5b6ef9" xlink:href="lad-20260630.xsd#lad_IndefiniteLivedIntangibleAssetImpairmentNumberOfUnderperformingStores"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_019e2245-a5aa-7bac-a476-e55ac7e0c426" xlink:to="loc_lad_IndefiniteLivedIntangibleAssetImpairmentNumberOfUnderperformingStores_019e2245-a5aa-7b41-a213-91239b5b6ef9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsRollForward_019e2245-a5aa-7c8b-a2ff-f72076591cc7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IndefiniteLivedIntangibleAssetsRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_019e2245-a5aa-7bac-a476-e55ac7e0c426" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsRollForward_019e2245-a5aa-7c8b-a2ff-f72076591cc7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_019e2245-a5aa-74a9-9aba-ee123bb2d12f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsRollForward_019e2245-a5aa-7c8b-a2ff-f72076591cc7" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_019e2245-a5aa-74a9-9aba-ee123bb2d12f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefinitelivedIntangibleAssetsAcquired_019e2245-a5aa-77f9-94af-2e9aa05f369d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IndefinitelivedIntangibleAssetsAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsRollForward_019e2245-a5aa-7c8b-a2ff-f72076591cc7" xlink:to="loc_us-gaap_IndefinitelivedIntangibleAssetsAcquired_019e2245-a5aa-77f9-94af-2e9aa05f369d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsWrittenOffRelatedToSaleOfBusinessUnit_019e2245-a5aa-7290-aa2f-3d1ee28be568" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IndefiniteLivedIntangibleAssetsWrittenOffRelatedToSaleOfBusinessUnit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsRollForward_019e2245-a5aa-7c8b-a2ff-f72076591cc7" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsWrittenOffRelatedToSaleOfBusinessUnit_019e2245-a5aa-7290-aa2f-3d1ee28be568" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_019e2245-a5aa-786f-af78-8fe84315c560" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsRollForward_019e2245-a5aa-7c8b-a2ff-f72076591cc7" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_019e2245-a5aa-786f-af78-8fe84315c560" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsTranslationAndPurchaseAccountingAdjustments_019e2245-a5aa-7c8a-bac8-8da0eadc5ca0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IndefiniteLivedIntangibleAssetsTranslationAndPurchaseAccountingAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsRollForward_019e2245-a5aa-7c8b-a2ff-f72076591cc7" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsTranslationAndPurchaseAccountingAdjustments_019e2245-a5aa-7c8a-bac8-8da0eadc5ca0" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_019e2245-a5aa-7ab8-9146-5f64a19695fc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lithia.com/role/INVESTMENTSMarketableSecuritiesDetails" xlink:type="simple" xlink:href="lad-20260630.xsd#INVESTMENTSMarketableSecuritiesDetails"/>
  <link:definitionLink xlink:role="http://www.lithia.com/role/INVESTMENTSMarketableSecuritiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_019e2245-a5aa-78e7-82de-40f719716f25" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_019e2245-a5aa-79f2-b731-b8e090164cba" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_019e2245-a5aa-78e7-82de-40f719716f25" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_019e2245-a5aa-79f2-b731-b8e090164cba" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_019e2245-a5aa-7356-b57b-21c47e21f718" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_019e2245-a5aa-79f2-b731-b8e090164cba" xlink:to="loc_us-gaap_FinancialInstrumentAxis_019e2245-a5aa-7356-b57b-21c47e21f718" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e2245-a5aa-7356-b57b-21c47e21f718_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019e2245-a5aa-7356-b57b-21c47e21f718" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e2245-a5aa-7356-b57b-21c47e21f718_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e2245-a5aa-7cf9-970b-933c99a043da" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019e2245-a5aa-7356-b57b-21c47e21f718" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e2245-a5aa-7cf9-970b-933c99a043da" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasurySecuritiesMember_019e2245-a5aa-70fd-b090-9268b5beded8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USTreasurySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e2245-a5aa-7cf9-970b-933c99a043da" xlink:to="loc_us-gaap_USTreasurySecuritiesMember_019e2245-a5aa-70fd-b090-9268b5beded8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_019e2245-a5aa-7056-b7fb-0b4b06511b20" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USStatesAndPoliticalSubdivisionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e2245-a5aa-7cf9-970b-933c99a043da" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_019e2245-a5aa-7056-b7fb-0b4b06511b20" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_019e2245-a5aa-73b2-adcb-fc68c4865b00" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e2245-a5aa-7cf9-970b-933c99a043da" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_019e2245-a5aa-73b2-adcb-fc68c4865b00" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_019e2245-a5aa-74fc-958d-d006af89f242" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_019e2245-a5aa-78e7-82de-40f719716f25" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_019e2245-a5aa-74fc-958d-d006af89f242" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_019e2245-a5aa-700d-b378-9bcc56e688b6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_019e2245-a5aa-78e7-82de-40f719716f25" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_019e2245-a5aa-700d-b378-9bcc56e688b6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_019e2245-a5aa-706a-a3e2-593529c91b32" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_019e2245-a5aa-78e7-82de-40f719716f25" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_019e2245-a5aa-706a-a3e2-593529c91b32" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_019e2245-a5aa-767b-bc16-5b92a82c4c73" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_019e2245-a5aa-78e7-82de-40f719716f25" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_019e2245-a5aa-767b-bc16-5b92a82c4c73" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_019e2245-a5aa-78fc-bdc0-1381e69a6332" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_019e2245-a5aa-78e7-82de-40f719716f25" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_019e2245-a5aa-78fc-bdc0-1381e69a6332" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_019e2245-a5aa-7eb9-b7d8-1be06a55e1ef" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_019e2245-a5aa-78fc-bdc0-1381e69a6332" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_019e2245-a5aa-7eb9-b7d8-1be06a55e1ef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_019e2245-a5aa-7849-8b47-5ae9e751a846" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_019e2245-a5aa-78fc-bdc0-1381e69a6332" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_019e2245-a5aa-7849-8b47-5ae9e751a846" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_019e2245-a5aa-7229-8e99-f98507f081b4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract_019e2245-a5aa-78fc-bdc0-1381e69a6332" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_019e2245-a5aa-7229-8e99-f98507f081b4" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lithia.com/role/INVESTMENTSEquityMethodInvestmentsDetails" xlink:type="simple" xlink:href="lad-20260630.xsd#INVESTMENTSEquityMethodInvestmentsDetails"/>
  <link:definitionLink xlink:role="http://www.lithia.com/role/INVESTMENTSEquityMethodInvestmentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019e2245-a5aa-7986-b43a-2dec88f76bd6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_019e2245-a5aa-7454-8e39-4212c197165e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019e2245-a5aa-7986-b43a-2dec88f76bd6" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_019e2245-a5aa-7454-8e39-4212c197165e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019e2245-a5aa-7463-92f7-52f6b90fe09a" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_019e2245-a5aa-7454-8e39-4212c197165e" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019e2245-a5aa-7463-92f7-52f6b90fe09a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_019e2245-a5aa-7463-92f7-52f6b90fe09a_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019e2245-a5aa-7463-92f7-52f6b90fe09a" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_019e2245-a5aa-7463-92f7-52f6b90fe09a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_019e2245-a5aa-7c95-ba28-37f1145d09ff" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019e2245-a5aa-7463-92f7-52f6b90fe09a" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_019e2245-a5aa-7c95-ba28-37f1145d09ff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_PinewoodTechnologiesPLCPINE.LMember_019e2245-a5aa-7154-bc8f-bf00239bfbf9" xlink:href="lad-20260630.xsd#lad_PinewoodTechnologiesPLCPINE.LMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_019e2245-a5aa-7c95-ba28-37f1145d09ff" xlink:to="loc_lad_PinewoodTechnologiesPLCPINE.LMember_019e2245-a5aa-7154-bc8f-bf00239bfbf9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_WheelsInc.ThroughLMMHMember_019e2245-a5aa-73ce-b182-0b8b7daaebf7" xlink:href="lad-20260630.xsd#lad_WheelsInc.ThroughLMMHMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_019e2245-a5aa-7c95-ba28-37f1145d09ff" xlink:to="loc_lad_WheelsInc.ThroughLMMHMember_019e2245-a5aa-73ce-b182-0b8b7daaebf7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_019e2245-a5aa-70f2-b6ec-1ff16b13cf08" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019e2245-a5aa-7986-b43a-2dec88f76bd6" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_019e2245-a5aa-70f2-b6ec-1ff16b13cf08" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentsFairValueDisclosure_019e2245-a5aa-7cbf-be8e-f8c7f4c2e402" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestmentsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019e2245-a5aa-7986-b43a-2dec88f76bd6" xlink:to="loc_us-gaap_EquityMethodInvestmentsFairValueDisclosure_019e2245-a5aa-7cbf-be8e-f8c7f4c2e402" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestments_019e2245-a5aa-7b68-a775-da7d01cf5ea8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019e2245-a5aa-7986-b43a-2dec88f76bd6" xlink:to="loc_us-gaap_EquityMethodInvestments_019e2245-a5aa-7b68-a775-da7d01cf5ea8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentDividendsOrDistributions_019e2245-a5aa-7a6b-a546-b0c755e564da" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestmentDividendsOrDistributions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019e2245-a5aa-7986-b43a-2dec88f76bd6" xlink:to="loc_us-gaap_EquityMethodInvestmentDividendsOrDistributions_019e2245-a5aa-7a6b-a546-b0c755e564da" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lithia.com/role/COMMITMENTSANDCONTINGENCIESDetails" xlink:type="simple" xlink:href="lad-20260630.xsd#COMMITMENTSANDCONTINGENCIESDetails"/>
  <link:definitionLink xlink:role="http://www.lithia.com/role/COMMITMENTSANDCONTINGENCIESDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsLineItems_019e2245-a5aa-7836-8d8a-42ba3fb10e96" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherCommitmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsTable_019e2245-a5aa-7139-be87-3e6e2d2399d4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherCommitmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_019e2245-a5aa-7836-8d8a-42ba3fb10e96" xlink:to="loc_us-gaap_OtherCommitmentsTable_019e2245-a5aa-7139-be87-3e6e2d2399d4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019e2245-a5aa-7a39-9f76-8ad1139cae9d" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_019e2245-a5aa-7139-be87-3e6e2d2399d4" xlink:to="loc_srt_ProductOrServiceAxis_019e2245-a5aa-7a39-9f76-8ad1139cae9d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019e2245-a5aa-7a39-9f76-8ad1139cae9d_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_019e2245-a5aa-7a39-9f76-8ad1139cae9d" xlink:to="loc_srt_ProductsAndServicesDomain_019e2245-a5aa-7a39-9f76-8ad1139cae9d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019e2245-a5aa-7081-8e69-b99c4e5fe5b0" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_019e2245-a5aa-7a39-9f76-8ad1139cae9d" xlink:to="loc_srt_ProductsAndServicesDomain_019e2245-a5aa-7081-8e69-b99c4e5fe5b0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_AftersalesMember_019e2245-a5aa-7300-969e-d5ff9d13d131" xlink:href="lad-20260630.xsd#lad_AftersalesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e2245-a5aa-7081-8e69-b99c4e5fe5b0" xlink:to="loc_lad_AftersalesMember_019e2245-a5aa-7300-969e-d5ff9d13d131" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_LeaseVehiclesMember_019e2245-a5aa-7a2e-a06d-f75ea457d512" xlink:href="lad-20260630.xsd#lad_LeaseVehiclesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019e2245-a5aa-7081-8e69-b99c4e5fe5b0" xlink:to="loc_lad_LeaseVehiclesMember_019e2245-a5aa-7a2e-a06d-f75ea457d512" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiability_019e2245-a5aa-70a2-a951-45d44f9a2bc1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_019e2245-a5aa-7836-8d8a-42ba3fb10e96" xlink:to="loc_us-gaap_ContractWithCustomerLiability_019e2245-a5aa-70a2-a951-45d44f9a2bc1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_019e2245-a5aa-7349-aad5-25a047fd4733" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_019e2245-a5aa-7836-8d8a-42ba3fb10e96" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_019e2245-a5aa-7349-aad5-25a047fd4733" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lithia.com/role/DEBTNarrativeDetails" xlink:type="simple" xlink:href="lad-20260630.xsd#DEBTNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.lithia.com/role/DEBTNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019e2245-a5aa-7aed-b4b1-893a429bdf01" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_019e2245-a5aa-748c-ae7f-f82e384cab9c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e2245-a5aa-7aed-b4b1-893a429bdf01" xlink:to="loc_us-gaap_DebtInstrumentTable_019e2245-a5aa-748c-ae7f-f82e384cab9c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019e2245-a5aa-7bfd-b5da-632472792f36" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e2245-a5aa-748c-ae7f-f82e384cab9c" xlink:to="loc_us-gaap_DebtInstrumentAxis_019e2245-a5aa-7bfd-b5da-632472792f36" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-7bfd-b5da-632472792f36_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e2245-a5aa-7bfd-b5da-632472792f36" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-7bfd-b5da-632472792f36_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-749a-b8fb-9fe1a9fdfb7f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e2245-a5aa-7bfd-b5da-632472792f36" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-749a-b8fb-9fe1a9fdfb7f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_SyndicatedCreditFacilityMember_019e2245-a5aa-7174-8722-818802be20d7" xlink:href="lad-20260630.xsd#lad_SyndicatedCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-749a-b8fb-9fe1a9fdfb7f" xlink:to="loc_lad_SyndicatedCreditFacilityMember_019e2245-a5aa-7174-8722-818802be20d7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_SyndicatedCreditFacilityUponExpansionOfOriginalLineOfCreditMember_019e2245-a5aa-77ae-a481-3b5721d7be19" xlink:href="lad-20260630.xsd#lad_SyndicatedCreditFacilityUponExpansionOfOriginalLineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-749a-b8fb-9fe1a9fdfb7f" xlink:to="loc_lad_SyndicatedCreditFacilityUponExpansionOfOriginalLineOfCreditMember_019e2245-a5aa-77ae-a481-3b5721d7be19" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_BankOfNovaScotiaCreditAgreementMember_019e2245-a5aa-7bbb-87b4-34f92c0b19f7" xlink:href="lad-20260630.xsd#lad_BankOfNovaScotiaCreditAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-749a-b8fb-9fe1a9fdfb7f" xlink:to="loc_lad_BankOfNovaScotiaCreditAgreementMember_019e2245-a5aa-7bbb-87b4-34f92c0b19f7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019e2245-a5aa-7fc5-916b-0934d19856e4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e2245-a5aa-748c-ae7f-f82e384cab9c" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019e2245-a5aa-7fc5-916b-0934d19856e4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e2245-a5aa-7fc5-916b-0934d19856e4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e2245-a5aa-7fc5-916b-0934d19856e4" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e2245-a5aa-7fc5-916b-0934d19856e4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e2245-a5aa-7c4e-b09b-f93116ae0019" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e2245-a5aa-7fc5-916b-0934d19856e4" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e2245-a5aa-7c4e-b09b-f93116ae0019" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_019e2245-a5aa-7099-87a5-f0d4dd4d468c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e2245-a5aa-7c4e-b09b-f93116ae0019" xlink:to="loc_us-gaap_LineOfCreditMember_019e2245-a5aa-7099-87a5-f0d4dd4d468c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_019e2245-a5aa-7986-acd5-6614df37e7f9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e2245-a5aa-748c-ae7f-f82e384cab9c" xlink:to="loc_us-gaap_CreditFacilityAxis_019e2245-a5aa-7986-acd5-6614df37e7f9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e2245-a5aa-7986-acd5-6614df37e7f9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_019e2245-a5aa-7986-acd5-6614df37e7f9" xlink:to="loc_us-gaap_CreditFacilityDomain_019e2245-a5aa-7986-acd5-6614df37e7f9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e2245-a5aa-755a-aef5-7181ba14ed0c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_019e2245-a5aa-7986-acd5-6614df37e7f9" xlink:to="loc_us-gaap_CreditFacilityDomain_019e2245-a5aa-755a-aef5-7181ba14ed0c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_NewVehicleInventoryFloorplanFinancingMember_019e2245-a5aa-766b-a6d5-10a534935bbc" xlink:href="lad-20260630.xsd#lad_NewVehicleInventoryFloorplanFinancingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e2245-a5aa-755a-aef5-7181ba14ed0c" xlink:to="loc_lad_NewVehicleInventoryFloorplanFinancingMember_019e2245-a5aa-766b-a6d5-10a534935bbc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_UsedVehicleInventoryFloorplanFinancingMember_019e2245-a5aa-78f9-b38c-de4a1462feb7" xlink:href="lad-20260630.xsd#lad_UsedVehicleInventoryFloorplanFinancingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e2245-a5aa-755a-aef5-7181ba14ed0c" xlink:to="loc_lad_UsedVehicleInventoryFloorplanFinancingMember_019e2245-a5aa-78f9-b38c-de4a1462feb7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_ServiceLoanerVehicleFloorplanFinancingMember_019e2245-a5aa-7eb1-9aef-de56f1520fb8" xlink:href="lad-20260630.xsd#lad_ServiceLoanerVehicleFloorplanFinancingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e2245-a5aa-755a-aef5-7181ba14ed0c" xlink:to="loc_lad_ServiceLoanerVehicleFloorplanFinancingMember_019e2245-a5aa-7eb1-9aef-de56f1520fb8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_019e2245-a5aa-734e-b6fa-3593dd7ff185" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e2245-a5aa-755a-aef5-7181ba14ed0c" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_019e2245-a5aa-734e-b6fa-3593dd7ff185" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_WorkingCapitalRevolvingCreditFacilityMember_019e2245-a5aa-77db-8af4-4febbfb71936" xlink:href="lad-20260630.xsd#lad_WorkingCapitalRevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e2245-a5aa-755a-aef5-7181ba14ed0c" xlink:to="loc_lad_WorkingCapitalRevolvingCreditFacilityMember_019e2245-a5aa-77db-8af4-4febbfb71936" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_WholesaleFlooringFacilityMember_019e2245-a5aa-7db4-a4c8-38429719c5a1" xlink:href="lad-20260630.xsd#lad_WholesaleFlooringFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e2245-a5aa-755a-aef5-7181ba14ed0c" xlink:to="loc_lad_WholesaleFlooringFacilityMember_019e2245-a5aa-7db4-a4c8-38429719c5a1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_UsedVehiclesFlooringFacilityMember_019e2245-a5aa-7162-8d1e-0f69c08d0572" xlink:href="lad-20260630.xsd#lad_UsedVehiclesFlooringFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e2245-a5aa-755a-aef5-7181ba14ed0c" xlink:to="loc_lad_UsedVehiclesFlooringFacilityMember_019e2245-a5aa-7162-8d1e-0f69c08d0572" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_WholesaleLeaseFinancingMember_019e2245-a5aa-7413-b5ea-06402833b572" xlink:href="lad-20260630.xsd#lad_WholesaleLeaseFinancingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e2245-a5aa-755a-aef5-7181ba14ed0c" xlink:to="loc_lad_WholesaleLeaseFinancingMember_019e2245-a5aa-7413-b5ea-06402833b572" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_DailyRentalVehicleFacilityMember_019e2245-a5aa-75ff-9fb5-5468b4c5185b" xlink:href="lad-20260630.xsd#lad_DailyRentalVehicleFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e2245-a5aa-755a-aef5-7181ba14ed0c" xlink:to="loc_lad_DailyRentalVehicleFacilityMember_019e2245-a5aa-75ff-9fb5-5468b4c5185b" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019e2245-a5aa-7da8-b22f-b083358eedf7" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e2245-a5aa-748c-ae7f-f82e384cab9c" xlink:to="loc_srt_RangeAxis_019e2245-a5aa-7da8-b22f-b083358eedf7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e2245-a5aa-7da8-b22f-b083358eedf7_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_019e2245-a5aa-7da8-b22f-b083358eedf7" xlink:to="loc_srt_RangeMember_019e2245-a5aa-7da8-b22f-b083358eedf7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e2245-a5aa-7b6a-a89c-38eab35ac11e" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_019e2245-a5aa-7da8-b22f-b083358eedf7" xlink:to="loc_srt_RangeMember_019e2245-a5aa-7b6a-a89c-38eab35ac11e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019e2245-a5aa-76bc-8aee-13e97c237288" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019e2245-a5aa-7b6a-a89c-38eab35ac11e" xlink:to="loc_srt_MinimumMember_019e2245-a5aa-76bc-8aee-13e97c237288" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019e2245-a5aa-71d7-8fee-658790f1d3d4" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019e2245-a5aa-7b6a-a89c-38eab35ac11e" xlink:to="loc_srt_MaximumMember_019e2245-a5aa-71d7-8fee-658790f1d3d4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RecourseStatusAxis_019e2245-a5aa-753c-8dca-bfaac0b05b83" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RecourseStatusAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e2245-a5aa-748c-ae7f-f82e384cab9c" xlink:to="loc_us-gaap_RecourseStatusAxis_019e2245-a5aa-753c-8dca-bfaac0b05b83" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RecourseStatusDomain_019e2245-a5aa-753c-8dca-bfaac0b05b83_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RecourseStatusDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RecourseStatusAxis_019e2245-a5aa-753c-8dca-bfaac0b05b83" xlink:to="loc_us-gaap_RecourseStatusDomain_019e2245-a5aa-753c-8dca-bfaac0b05b83_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RecourseStatusDomain_019e2245-a5aa-7ad3-9e3f-70f39156e6f7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RecourseStatusDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RecourseStatusAxis_019e2245-a5aa-753c-8dca-bfaac0b05b83" xlink:to="loc_us-gaap_RecourseStatusDomain_019e2245-a5aa-7ad3-9e3f-70f39156e6f7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonrecourseMember_019e2245-a5aa-7f06-b3ac-f07b3feaaa36" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonrecourseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RecourseStatusDomain_019e2245-a5aa-7ad3-9e3f-70f39156e6f7" xlink:to="loc_us-gaap_NonrecourseMember_019e2245-a5aa-7f06-b3ac-f07b3feaaa36" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnderlyingAssetClassAxis_019e2245-a5aa-7f5d-aea5-70b7863da5ac" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnderlyingAssetClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e2245-a5aa-748c-ae7f-f82e384cab9c" xlink:to="loc_us-gaap_UnderlyingAssetClassAxis_019e2245-a5aa-7f5d-aea5-70b7863da5ac" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnderlyingAssetClassDomain_019e2245-a5aa-7f5d-aea5-70b7863da5ac_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnderlyingAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_UnderlyingAssetClassAxis_019e2245-a5aa-7f5d-aea5-70b7863da5ac" xlink:to="loc_us-gaap_UnderlyingAssetClassDomain_019e2245-a5aa-7f5d-aea5-70b7863da5ac_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnderlyingAssetClassDomain_019e2245-a5aa-737d-9bdc-70304c69dcad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnderlyingAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_UnderlyingAssetClassAxis_019e2245-a5aa-7f5d-aea5-70b7863da5ac" xlink:to="loc_us-gaap_UnderlyingAssetClassDomain_019e2245-a5aa-737d-9bdc-70304c69dcad" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CollateralizedAutoLoansMember_019e2245-a5aa-7abb-9784-b1ffbc11a2c1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CollateralizedAutoLoansMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnderlyingAssetClassDomain_019e2245-a5aa-737d-9bdc-70304c69dcad" xlink:to="loc_us-gaap_CollateralizedAutoLoansMember_019e2245-a5aa-7abb-9784-b1ffbc11a2c1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_DebtInstrumentNumberOfCounterparties_019e2245-a5aa-7c38-a835-f9e0884ef406" xlink:href="lad-20260630.xsd#lad_DebtInstrumentNumberOfCounterparties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e2245-a5aa-7aed-b4b1-893a429bdf01" xlink:to="loc_lad_DebtInstrumentNumberOfCounterparties_019e2245-a5aa-7c38-a835-f9e0884ef406" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_DebtInstrumentNumberOfManufacturerAffiliatedFinanceCompanies_019e2245-a5aa-7005-ac5f-977586ca4846" xlink:href="lad-20260630.xsd#lad_DebtInstrumentNumberOfManufacturerAffiliatedFinanceCompanies"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e2245-a5aa-7aed-b4b1-893a429bdf01" xlink:to="loc_lad_DebtInstrumentNumberOfManufacturerAffiliatedFinanceCompanies_019e2245-a5aa-7005-ac5f-977586ca4846" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_019e2245-a5aa-7b95-b054-80cf14e6e2ef" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e2245-a5aa-7aed-b4b1-893a429bdf01" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_019e2245-a5aa-7b95-b054-80cf14e6e2ef" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019e2245-a5aa-7868-933d-0d339ddc71e0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e2245-a5aa-7aed-b4b1-893a429bdf01" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019e2245-a5aa-7868-933d-0d339ddc71e0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_LineOfCreditFacilityOptionToReallocateCommitmentMaximumAggregateCommitmentThresholdPercentage_019e2245-a5aa-7998-a569-fb52e2208346" xlink:href="lad-20260630.xsd#lad_LineOfCreditFacilityOptionToReallocateCommitmentMaximumAggregateCommitmentThresholdPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e2245-a5aa-7aed-b4b1-893a429bdf01" xlink:to="loc_lad_LineOfCreditFacilityOptionToReallocateCommitmentMaximumAggregateCommitmentThresholdPercentage_019e2245-a5aa-7998-a569-fb52e2208346" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromNotesPayable_019e2245-a5aa-7f46-be0c-8bb7d6175977" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromNotesPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e2245-a5aa-7aed-b4b1-893a429bdf01" xlink:to="loc_us-gaap_ProceedsFromNotesPayable_019e2245-a5aa-7f46-be0c-8bb7d6175977" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lithia.com/role/DEBTScheduleofAnnualInterestRatesDetails" xlink:type="simple" xlink:href="lad-20260630.xsd#DEBTScheduleofAnnualInterestRatesDetails"/>
  <link:definitionLink xlink:role="http://www.lithia.com/role/DEBTScheduleofAnnualInterestRatesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019e2245-a5aa-7243-ac80-c4b0af912f97" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_019e2245-a5aa-73ac-966c-54eb446a43cf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e2245-a5aa-7243-ac80-c4b0af912f97" xlink:to="loc_us-gaap_DebtInstrumentTable_019e2245-a5aa-73ac-966c-54eb446a43cf" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019e2245-a5aa-7fe1-9d6b-717d7da7c27a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e2245-a5aa-73ac-966c-54eb446a43cf" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019e2245-a5aa-7fe1-9d6b-717d7da7c27a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e2245-a5aa-7fe1-9d6b-717d7da7c27a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e2245-a5aa-7fe1-9d6b-717d7da7c27a" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e2245-a5aa-7fe1-9d6b-717d7da7c27a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e2245-a5aa-7975-86e7-194c83ea1734" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e2245-a5aa-7fe1-9d6b-717d7da7c27a" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e2245-a5aa-7975-86e7-194c83ea1734" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_019e2245-a5aa-75a9-9978-c91443da71f7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e2245-a5aa-7975-86e7-194c83ea1734" xlink:to="loc_us-gaap_LineOfCreditMember_019e2245-a5aa-75a9-9978-c91443da71f7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019e2245-a5aa-760e-8aec-0cdafc82a9f1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e2245-a5aa-73ac-966c-54eb446a43cf" xlink:to="loc_us-gaap_DebtInstrumentAxis_019e2245-a5aa-760e-8aec-0cdafc82a9f1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-760e-8aec-0cdafc82a9f1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e2245-a5aa-760e-8aec-0cdafc82a9f1" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-760e-8aec-0cdafc82a9f1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-70ba-a2fb-6e0e5ab52971" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e2245-a5aa-760e-8aec-0cdafc82a9f1" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-70ba-a2fb-6e0e5ab52971" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_SyndicatedCreditFacilityMember_019e2245-a5aa-7070-960a-76f05c3a7bdd" xlink:href="lad-20260630.xsd#lad_SyndicatedCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-70ba-a2fb-6e0e5ab52971" xlink:to="loc_lad_SyndicatedCreditFacilityMember_019e2245-a5aa-7070-960a-76f05c3a7bdd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_BankOfNovaScotiaCreditAgreementMember_019e2245-a5aa-7750-ab06-a2113dd6a3bb" xlink:href="lad-20260630.xsd#lad_BankOfNovaScotiaCreditAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-70ba-a2fb-6e0e5ab52971" xlink:to="loc_lad_BankOfNovaScotiaCreditAgreementMember_019e2245-a5aa-7750-ab06-a2113dd6a3bb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_019e2245-a5aa-7e9a-8ce1-c9112bf41f34" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e2245-a5aa-73ac-966c-54eb446a43cf" xlink:to="loc_us-gaap_CreditFacilityAxis_019e2245-a5aa-7e9a-8ce1-c9112bf41f34" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e2245-a5aa-7e9a-8ce1-c9112bf41f34_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_019e2245-a5aa-7e9a-8ce1-c9112bf41f34" xlink:to="loc_us-gaap_CreditFacilityDomain_019e2245-a5aa-7e9a-8ce1-c9112bf41f34_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019e2245-a5aa-7afa-8113-05569409e49e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_019e2245-a5aa-7e9a-8ce1-c9112bf41f34" xlink:to="loc_us-gaap_CreditFacilityDomain_019e2245-a5aa-7afa-8113-05569409e49e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_NewVehicleInventoryFloorplanFinancingMember_019e2245-a5aa-73aa-af9d-431823301e86" xlink:href="lad-20260630.xsd#lad_NewVehicleInventoryFloorplanFinancingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e2245-a5aa-7afa-8113-05569409e49e" xlink:to="loc_lad_NewVehicleInventoryFloorplanFinancingMember_019e2245-a5aa-73aa-af9d-431823301e86" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_UsedVehicleInventoryFloorplanFinancingMember_019e2245-a5aa-7ec2-9e9a-33510330539c" xlink:href="lad-20260630.xsd#lad_UsedVehicleInventoryFloorplanFinancingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e2245-a5aa-7afa-8113-05569409e49e" xlink:to="loc_lad_UsedVehicleInventoryFloorplanFinancingMember_019e2245-a5aa-7ec2-9e9a-33510330539c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_ServiceLoanerVehicleFloorplanFinancingMember_019e2245-a5aa-7bb3-8ebb-f5197b3d5bef" xlink:href="lad-20260630.xsd#lad_ServiceLoanerVehicleFloorplanFinancingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e2245-a5aa-7afa-8113-05569409e49e" xlink:to="loc_lad_ServiceLoanerVehicleFloorplanFinancingMember_019e2245-a5aa-7bb3-8ebb-f5197b3d5bef" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_019e2245-a5aa-7bce-bd12-c24b31fcba30" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e2245-a5aa-7afa-8113-05569409e49e" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_019e2245-a5aa-7bce-bd12-c24b31fcba30" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_WholesaleFlooringFacilityMember_019e2245-a5aa-7533-bfe7-774dadcb0110" xlink:href="lad-20260630.xsd#lad_WholesaleFlooringFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e2245-a5aa-7afa-8113-05569409e49e" xlink:to="loc_lad_WholesaleFlooringFacilityMember_019e2245-a5aa-7533-bfe7-774dadcb0110" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_UsedVehiclesFlooringFacilityMember_019e2245-a5aa-7d33-9dfe-c0daf08518aa" xlink:href="lad-20260630.xsd#lad_UsedVehiclesFlooringFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e2245-a5aa-7afa-8113-05569409e49e" xlink:to="loc_lad_UsedVehiclesFlooringFacilityMember_019e2245-a5aa-7d33-9dfe-c0daf08518aa" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_DailyRentalVehicleFacilityMember_019e2245-a5aa-7491-8c13-bd0241f3c5a5" xlink:href="lad-20260630.xsd#lad_DailyRentalVehicleFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e2245-a5aa-7afa-8113-05569409e49e" xlink:to="loc_lad_DailyRentalVehicleFacilityMember_019e2245-a5aa-7491-8c13-bd0241f3c5a5" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_WholesaleLeaseFinancingMember_019e2245-a5aa-7d97-aee7-28684bc10263" xlink:href="lad-20260630.xsd#lad_WholesaleLeaseFinancingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e2245-a5aa-7afa-8113-05569409e49e" xlink:to="loc_lad_WholesaleLeaseFinancingMember_019e2245-a5aa-7d97-aee7-28684bc10263" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_WorkingCapitalRevolvingCreditFacilityMember_019e2245-a5aa-7ba0-ac35-590abd0b42fb" xlink:href="lad-20260630.xsd#lad_WorkingCapitalRevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019e2245-a5aa-7afa-8113-05569409e49e" xlink:to="loc_lad_WorkingCapitalRevolvingCreditFacilityMember_019e2245-a5aa-7ba0-ac35-590abd0b42fb" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_019e2245-a5aa-7e0c-9b77-e20fc0de4cf5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e2245-a5aa-7243-ac80-c4b0af912f97" xlink:to="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_019e2245-a5aa-7e0c-9b77-e20fc0de4cf5" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lithia.com/role/DEBTScheduleofNonRecourseNotesPayableDetails" xlink:type="simple" xlink:href="lad-20260630.xsd#DEBTScheduleofNonRecourseNotesPayableDetails"/>
  <link:definitionLink xlink:role="http://www.lithia.com/role/DEBTScheduleofNonRecourseNotesPayableDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019e2245-a5aa-79d5-b28a-1f55d32b9d39" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_019e2245-a5aa-7d0f-973b-70c7746446be" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e2245-a5aa-79d5-b28a-1f55d32b9d39" xlink:to="loc_us-gaap_DebtInstrumentTable_019e2245-a5aa-7d0f-973b-70c7746446be" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019e2245-a5aa-77ae-9a4b-ac159f307f32" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e2245-a5aa-7d0f-973b-70c7746446be" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019e2245-a5aa-77ae-9a4b-ac159f307f32" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e2245-a5aa-77ae-9a4b-ac159f307f32_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e2245-a5aa-77ae-9a4b-ac159f307f32" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e2245-a5aa-77ae-9a4b-ac159f307f32_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e2245-a5aa-7e46-93da-b06028903697" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e2245-a5aa-77ae-9a4b-ac159f307f32" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e2245-a5aa-7e46-93da-b06028903697" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesPayableOtherPayablesMember_019e2245-a5aa-7be7-8495-c7110fef0eca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesPayableOtherPayablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e2245-a5aa-7e46-93da-b06028903697" xlink:to="loc_us-gaap_NotesPayableOtherPayablesMember_019e2245-a5aa-7be7-8495-c7110fef0eca" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RecourseStatusAxis_019e2245-a5aa-72d1-a26f-fbb20f3817ba" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RecourseStatusAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e2245-a5aa-7d0f-973b-70c7746446be" xlink:to="loc_us-gaap_RecourseStatusAxis_019e2245-a5aa-72d1-a26f-fbb20f3817ba" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RecourseStatusDomain_019e2245-a5aa-72d1-a26f-fbb20f3817ba_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RecourseStatusDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RecourseStatusAxis_019e2245-a5aa-72d1-a26f-fbb20f3817ba" xlink:to="loc_us-gaap_RecourseStatusDomain_019e2245-a5aa-72d1-a26f-fbb20f3817ba_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RecourseStatusDomain_019e2245-a5aa-78d7-90f1-2bbcef9b2c4b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RecourseStatusDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RecourseStatusAxis_019e2245-a5aa-72d1-a26f-fbb20f3817ba" xlink:to="loc_us-gaap_RecourseStatusDomain_019e2245-a5aa-78d7-90f1-2bbcef9b2c4b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonrecourseMember_019e2245-a5aa-7ca7-a35c-eaef1c5bf092" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonrecourseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RecourseStatusDomain_019e2245-a5aa-78d7-90f1-2bbcef9b2c4b" xlink:to="loc_us-gaap_NonrecourseMember_019e2245-a5aa-7ca7-a35c-eaef1c5bf092" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019e2245-a5aa-788f-add3-e5ef275ea7a5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e2245-a5aa-7d0f-973b-70c7746446be" xlink:to="loc_us-gaap_DebtInstrumentAxis_019e2245-a5aa-788f-add3-e5ef275ea7a5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-788f-add3-e5ef275ea7a5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e2245-a5aa-788f-add3-e5ef275ea7a5" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-788f-add3-e5ef275ea7a5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-723d-a17f-8b9212157439" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e2245-a5aa-788f-add3-e5ef275ea7a5" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-723d-a17f-8b9212157439" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_AutoReceivablesTrust20221ClassCMember_019e2245-a5aa-78e0-b2b3-754b82307c9c" xlink:href="lad-20260630.xsd#lad_AutoReceivablesTrust20221ClassCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-723d-a17f-8b9212157439" xlink:to="loc_lad_AutoReceivablesTrust20221ClassCMember_019e2245-a5aa-78e0-b2b3-754b82307c9c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_AutoReceivablesTrust20231ClassDMember_019e2245-a5aa-70fb-bf76-24ec25af3d60" xlink:href="lad-20260630.xsd#lad_AutoReceivablesTrust20231ClassDMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-723d-a17f-8b9212157439" xlink:to="loc_lad_AutoReceivablesTrust20231ClassDMember_019e2245-a5aa-70fb-bf76-24ec25af3d60" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_AutoReceivablesTrust20232ClassCDMember_019f5acd-9634-7f6d-9a96-a5967341a550" xlink:href="lad-20260630.xsd#lad_AutoReceivablesTrust20232ClassCDMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-723d-a17f-8b9212157439" xlink:to="loc_lad_AutoReceivablesTrust20232ClassCDMember_019f5acd-9634-7f6d-9a96-a5967341a550" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_AutoReceivablesTrust20233ClassBDMember_019f5ace-1ab9-7ae3-84ab-459cd7ba07b1" xlink:href="lad-20260630.xsd#lad_AutoReceivablesTrust20233ClassBDMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-723d-a17f-8b9212157439" xlink:to="loc_lad_AutoReceivablesTrust20233ClassBDMember_019f5ace-1ab9-7ae3-84ab-459cd7ba07b1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_AutoReceivablesTrust20234ClassADMember_019e2245-a5aa-7377-b701-1d6a0acb7e96" xlink:href="lad-20260630.xsd#lad_AutoReceivablesTrust20234ClassADMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-723d-a17f-8b9212157439" xlink:to="loc_lad_AutoReceivablesTrust20234ClassADMember_019e2245-a5aa-7377-b701-1d6a0acb7e96" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_LADAutoReceivablesTrust20241ClassADMember_019e2245-a5aa-71be-9142-3caec54ec4a6" xlink:href="lad-20260630.xsd#lad_LADAutoReceivablesTrust20241ClassADMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-723d-a17f-8b9212157439" xlink:to="loc_lad_LADAutoReceivablesTrust20241ClassADMember_019e2245-a5aa-71be-9142-3caec54ec4a6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_LADAutoReceivablesTrust20242ClassADMember_019e2245-a5aa-7c9f-a57d-333c4582dbd8" xlink:href="lad-20260630.xsd#lad_LADAutoReceivablesTrust20242ClassADMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-723d-a17f-8b9212157439" xlink:to="loc_lad_LADAutoReceivablesTrust20242ClassADMember_019e2245-a5aa-7c9f-a57d-333c4582dbd8" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_LADAutoReceivablesTrust20243ClassADMember_019e2245-a5aa-7f88-94dc-fcb8ee998ed0" xlink:href="lad-20260630.xsd#lad_LADAutoReceivablesTrust20243ClassADMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-723d-a17f-8b9212157439" xlink:to="loc_lad_LADAutoReceivablesTrust20243ClassADMember_019e2245-a5aa-7f88-94dc-fcb8ee998ed0" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_LADAutoReceivablesTrust20251ClassADMember_019e2245-a5aa-7053-afc0-6680ad524cd6" xlink:href="lad-20260630.xsd#lad_LADAutoReceivablesTrust20251ClassADMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-723d-a17f-8b9212157439" xlink:to="loc_lad_LADAutoReceivablesTrust20251ClassADMember_019e2245-a5aa-7053-afc0-6680ad524cd6" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_LADAutoReceivablesTrust20252ClassADMember_019e2245-a5aa-7ad9-b4d3-d21182ca92b7" xlink:href="lad-20260630.xsd#lad_LADAutoReceivablesTrust20252ClassADMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-723d-a17f-8b9212157439" xlink:to="loc_lad_LADAutoReceivablesTrust20252ClassADMember_019e2245-a5aa-7ad9-b4d3-d21182ca92b7" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_LADAutoReceivablesTrust20253ClassACMember_019e2245-a5aa-76d2-b197-676dbdc1e639" xlink:href="lad-20260630.xsd#lad_LADAutoReceivablesTrust20253ClassACMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-723d-a17f-8b9212157439" xlink:to="loc_lad_LADAutoReceivablesTrust20253ClassACMember_019e2245-a5aa-76d2-b197-676dbdc1e639" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_LADAutoReceivablesTrust20261ClassACMember_019e2245-a5aa-7fb4-811b-8abaeb8a42dd" xlink:href="lad-20260630.xsd#lad_LADAutoReceivablesTrust20261ClassACMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-723d-a17f-8b9212157439" xlink:to="loc_lad_LADAutoReceivablesTrust20261ClassACMember_019e2245-a5aa-7fb4-811b-8abaeb8a42dd" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_LADAutoReceivablesTrust20262ClassACMember_019f5acf-ef36-7b7d-965c-87286bdca8a6" xlink:href="lad-20260630.xsd#lad_LADAutoReceivablesTrust20262ClassACMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-723d-a17f-8b9212157439" xlink:to="loc_lad_LADAutoReceivablesTrust20262ClassACMember_019f5acf-ef36-7b7d-965c-87286bdca8a6" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019e2245-a5aa-7193-b2cc-54cc244b39bc" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019e2245-a5aa-7d0f-973b-70c7746446be" xlink:to="loc_srt_RangeAxis_019e2245-a5aa-7193-b2cc-54cc244b39bc" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e2245-a5aa-7193-b2cc-54cc244b39bc_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_019e2245-a5aa-7193-b2cc-54cc244b39bc" xlink:to="loc_srt_RangeMember_019e2245-a5aa-7193-b2cc-54cc244b39bc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019e2245-a5aa-7ef6-923b-5364f4d4226b" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_019e2245-a5aa-7193-b2cc-54cc244b39bc" xlink:to="loc_srt_RangeMember_019e2245-a5aa-7ef6-923b-5364f4d4226b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019e2245-a5aa-7a45-a825-2b8b066f1df3" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019e2245-a5aa-7ef6-923b-5364f4d4226b" xlink:to="loc_srt_MinimumMember_019e2245-a5aa-7a45-a825-2b8b066f1df3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019e2245-a5aa-7c35-80fb-634974308b91" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019e2245-a5aa-7ef6-923b-5364f4d4226b" xlink:to="loc_srt_MaximumMember_019e2245-a5aa-7c35-80fb-634974308b91" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_019e2245-a5aa-749c-b65a-c0f041178e78" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e2245-a5aa-79d5-b28a-1f55d32b9d39" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_019e2245-a5aa-749c-b65a-c0f041178e78" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_019e2245-a5aa-76cf-94dd-8028e6a90b85" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e2245-a5aa-79d5-b28a-1f55d32b9d39" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_019e2245-a5aa-76cf-94dd-8028e6a90b85" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019e2245-a5aa-748e-8632-c28bece25673" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019e2245-a5aa-79d5-b28a-1f55d32b9d39" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019e2245-a5aa-748e-8632-c28bece25673" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lithia.com/role/EQUITYNarrativeDetails" xlink:type="simple" xlink:href="lad-20260630.xsd#EQUITYNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.lithia.com/role/EQUITYNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityClassOfTreasuryStockLineItems_019e2245-a5aa-7527-9914-c89d97de9faf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityClassOfTreasuryStockLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfTreasuryStockTable_019e2245-a5aa-7e60-89cf-f351b02686e1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ClassOfTreasuryStockTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_019e2245-a5aa-7527-9914-c89d97de9faf" xlink:to="loc_us-gaap_ClassOfTreasuryStockTable_019e2245-a5aa-7e60-89cf-f351b02686e1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_019e2245-a5aa-79cc-a81f-852a681d829b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ClassOfTreasuryStockTable_019e2245-a5aa-7e60-89cf-f351b02686e1" xlink:to="loc_us-gaap_AwardTypeAxis_019e2245-a5aa-79cc-a81f-852a681d829b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019e2245-a5aa-79cc-a81f-852a681d829b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_019e2245-a5aa-79cc-a81f-852a681d829b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019e2245-a5aa-79cc-a81f-852a681d829b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019e2245-a5aa-7f67-b1d2-97d241441020" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_019e2245-a5aa-79cc-a81f-852a681d829b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019e2245-a5aa-7f67-b1d2-97d241441020" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_019e2245-a5aa-79ba-b8b2-338324b5f0aa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019e2245-a5aa-7f67-b1d2-97d241441020" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_019e2245-a5aa-79ba-b8b2-338324b5f0aa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StockRepurchaseProgramAuthorizedAmount1_019e2245-a5aa-75a5-9479-372a17f93b87" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_StockRepurchaseProgramAuthorizedAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_019e2245-a5aa-7527-9914-c89d97de9faf" xlink:to="loc_srt_StockRepurchaseProgramAuthorizedAmount1_019e2245-a5aa-75a5-9479-372a17f93b87" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_019e2245-a5aa-7476-ba03-9daa2178ee63" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_019e2245-a5aa-7527-9914-c89d97de9faf" xlink:to="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_019e2245-a5aa-7476-ba03-9daa2178ee63" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_019e2245-a5aa-7434-b7c3-67b83fd090bb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_019e2245-a5aa-7527-9914-c89d97de9faf" xlink:to="loc_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_019e2245-a5aa-7434-b7c3-67b83fd090bb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased_019e2245-a5aa-79f3-8fed-701173aac45f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_019e2245-a5aa-7527-9914-c89d97de9faf" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased_019e2245-a5aa-79f3-8fed-701173aac45f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_019e2245-a5aa-745c-9bd4-5ad03c03cb43" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_019e2245-a5aa-7527-9914-c89d97de9faf" xlink:to="loc_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_019e2245-a5aa-745c-9bd4-5ad03c03cb43" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lithia.com/role/FAIRVALUEMEASUREMENTSDetails" xlink:type="simple" xlink:href="lad-20260630.xsd#FAIRVALUEMEASUREMENTSDetails"/>
  <link:definitionLink xlink:role="http://www.lithia.com/role/FAIRVALUEMEASUREMENTSDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e2245-a5ab-72cc-84c9-17d41f3d1a64" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e2245-a5aa-7ae8-a12e-892c812f40e3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e2245-a5ab-72cc-84c9-17d41f3d1a64" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e2245-a5aa-7ae8-a12e-892c812f40e3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e2245-a5aa-7461-a289-4e67c0c1525a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e2245-a5aa-7ae8-a12e-892c812f40e3" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e2245-a5aa-7461-a289-4e67c0c1525a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e2245-a5aa-7461-a289-4e67c0c1525a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e2245-a5aa-7461-a289-4e67c0c1525a" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e2245-a5aa-7461-a289-4e67c0c1525a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e2245-a5aa-7db6-b3ae-b01fa56a4d9e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019e2245-a5aa-7461-a289-4e67c0c1525a" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e2245-a5aa-7db6-b3ae-b01fa56a4d9e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_019e2245-a5aa-72f2-8856-901d4d4adea5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e2245-a5aa-7db6-b3ae-b01fa56a4d9e" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_019e2245-a5aa-72f2-8856-901d4d4adea5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_019e2245-a5aa-70a5-86c1-b514fd22be30" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e2245-a5aa-7db6-b3ae-b01fa56a4d9e" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_019e2245-a5aa-70a5-86c1-b514fd22be30" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_019e2245-a5aa-7c07-abe5-06b1398f6a09" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019e2245-a5aa-7db6-b3ae-b01fa56a4d9e" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_019e2245-a5aa-7c07-abe5-06b1398f6a09" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis_019e2245-a5aa-7c27-ad69-1c2e574fd8a2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e2245-a5aa-7ae8-a12e-892c812f40e3" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis_019e2245-a5aa-7c27-ad69-1c2e574fd8a2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_019e2245-a5aa-7c27-ad69-1c2e574fd8a2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis_019e2245-a5aa-7c27-ad69-1c2e574fd8a2" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_019e2245-a5aa-7c27-ad69-1c2e574fd8a2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_019e2245-a5aa-7844-96e4-ad379c783f94" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis_019e2245-a5aa-7c27-ad69-1c2e574fd8a2" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_019e2245-a5aa-7844-96e4-ad379c783f94" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_RestrictedCashCollectionsMember_019e2245-a5aa-703c-a705-6202bb6a8175" xlink:href="lad-20260630.xsd#lad_RestrictedCashCollectionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_019e2245-a5aa-7844-96e4-ad379c783f94" xlink:to="loc_lad_RestrictedCashCollectionsMember_019e2245-a5aa-703c-a705-6202bb6a8175" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_RestrictedCashReserveMember_019e2245-a5aa-7b55-a322-a2a5319c8cc2" xlink:href="lad-20260630.xsd#lad_RestrictedCashReserveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_019e2245-a5aa-7844-96e4-ad379c783f94" xlink:to="loc_lad_RestrictedCashReserveMember_019e2245-a5aa-7b55-a322-a2a5319c8cc2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_019e2245-a5aa-7525-a05a-06c48d7f45a1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e2245-a5aa-7ae8-a12e-892c812f40e3" xlink:to="loc_us-gaap_FinancialInstrumentAxis_019e2245-a5aa-7525-a05a-06c48d7f45a1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e2245-a5aa-7525-a05a-06c48d7f45a1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019e2245-a5aa-7525-a05a-06c48d7f45a1" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e2245-a5aa-7525-a05a-06c48d7f45a1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e2245-a5aa-78d4-a373-1eb294477651" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019e2245-a5aa-7525-a05a-06c48d7f45a1" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e2245-a5aa-78d4-a373-1eb294477651" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasurySecuritiesMember_019e2245-a5aa-7086-987c-c7d3c7dab475" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USTreasurySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e2245-a5aa-78d4-a373-1eb294477651" xlink:to="loc_us-gaap_USTreasurySecuritiesMember_019e2245-a5aa-7086-987c-c7d3c7dab475" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MunicipalBondsMember_019e2245-a5aa-7cfe-aef5-8aa4e7e6e59a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MunicipalBondsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e2245-a5aa-78d4-a373-1eb294477651" xlink:to="loc_us-gaap_MunicipalBondsMember_019e2245-a5aa-7cfe-aef5-8aa4e7e6e59a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_019e2245-a5aa-76a9-90da-291871fe41d0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019e2245-a5aa-78d4-a373-1eb294477651" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_019e2245-a5aa-76a9-90da-291871fe41d0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019e2245-a5aa-71e4-9f21-bdf674092797" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e2245-a5aa-7ae8-a12e-892c812f40e3" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019e2245-a5aa-71e4-9f21-bdf674092797" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_019e2245-a5aa-71e4-9f21-bdf674092797_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019e2245-a5aa-71e4-9f21-bdf674092797" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_019e2245-a5aa-71e4-9f21-bdf674092797_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_019e2245-a5aa-7190-a6c9-83e1dcb87daf" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019e2245-a5aa-71e4-9f21-bdf674092797" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_019e2245-a5aa-7190-a6c9-83e1dcb87daf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_PinewoodTechnologiesPLCPINE.LMember_019e2245-a5aa-7e9c-95dd-b18eb135bfae" xlink:href="lad-20260630.xsd#lad_PinewoodTechnologiesPLCPINE.LMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_019e2245-a5aa-7190-a6c9-83e1dcb87daf" xlink:to="loc_lad_PinewoodTechnologiesPLCPINE.LMember_019e2245-a5aa-7e9c-95dd-b18eb135bfae" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019e2245-a5aa-7282-afd5-976615354aba" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e2245-a5aa-7ae8-a12e-892c812f40e3" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019e2245-a5aa-7282-afd5-976615354aba" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e2245-a5aa-7282-afd5-976615354aba_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e2245-a5aa-7282-afd5-976615354aba" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e2245-a5aa-7282-afd5-976615354aba_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019e2245-a5aa-75a3-813e-6bb5685f27fd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019e2245-a5aa-7282-afd5-976615354aba" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019e2245-a5aa-75a3-813e-6bb5685f27fd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_019e2245-a5aa-7e1c-b2d5-40c2da39a917" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e2245-a5aa-75a3-813e-6bb5685f27fd" xlink:to="loc_us-gaap_SeniorNotesMember_019e2245-a5aa-7e1c-b2d5-40c2da39a917" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesPayableOtherPayablesMember_019e2245-a5aa-775d-bf8e-13e02e466ebc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesPayableOtherPayablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e2245-a5aa-75a3-813e-6bb5685f27fd" xlink:to="loc_us-gaap_NotesPayableOtherPayablesMember_019e2245-a5aa-775d-bf8e-13e02e466ebc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_RealEstateMortgagesAndOtherDebtMember_019e2245-a5aa-7de1-a04c-bde0b151e7a1" xlink:href="lad-20260630.xsd#lad_RealEstateMortgagesAndOtherDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019e2245-a5aa-75a3-813e-6bb5685f27fd" xlink:to="loc_lad_RealEstateMortgagesAndOtherDebtMember_019e2245-a5aa-7de1-a04c-bde0b151e7a1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019e2245-a5aa-7495-8432-1e06bc27c95b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e2245-a5aa-7ae8-a12e-892c812f40e3" xlink:to="loc_us-gaap_DebtInstrumentAxis_019e2245-a5aa-7495-8432-1e06bc27c95b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-7495-8432-1e06bc27c95b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e2245-a5aa-7495-8432-1e06bc27c95b" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-7495-8432-1e06bc27c95b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-7526-a801-38cc6f97fbef" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019e2245-a5aa-7495-8432-1e06bc27c95b" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-7526-a801-38cc6f97fbef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_SeniorNotesDue2027Member_019e2245-a5aa-78bb-ad75-8566385bf0cc" xlink:href="lad-20260630.xsd#lad_SeniorNotesDue2027Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-7526-a801-38cc6f97fbef" xlink:to="loc_lad_SeniorNotesDue2027Member_019e2245-a5aa-78bb-ad75-8566385bf0cc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_SeniorNotesDue2029Member_019e2245-a5aa-71aa-9e25-9e613569a0c5" xlink:href="lad-20260630.xsd#lad_SeniorNotesDue2029Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-7526-a801-38cc6f97fbef" xlink:to="loc_lad_SeniorNotesDue2029Member_019e2245-a5aa-71aa-9e25-9e613569a0c5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_SeniorNotesDue2030Member_019e2245-a5ab-75bc-abac-068ddd81ca11" xlink:href="lad-20260630.xsd#lad_SeniorNotesDue2030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-7526-a801-38cc6f97fbef" xlink:to="loc_lad_SeniorNotesDue2030Member_019e2245-a5ab-75bc-abac-068ddd81ca11" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_SeniorNotesDue2031Member_019e2245-a5ab-76f9-a7f6-d0fb317d4f4a" xlink:href="lad-20260630.xsd#lad_SeniorNotesDue2031Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019e2245-a5aa-7526-a801-38cc6f97fbef" xlink:to="loc_lad_SeniorNotesDue2031Member_019e2245-a5ab-76f9-a7f6-d0fb317d4f4a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RecourseStatusAxis_019e2245-a5ab-7571-8916-d1f55a26a3b9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RecourseStatusAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019e2245-a5aa-7ae8-a12e-892c812f40e3" xlink:to="loc_us-gaap_RecourseStatusAxis_019e2245-a5ab-7571-8916-d1f55a26a3b9" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RecourseStatusDomain_019e2245-a5ab-7571-8916-d1f55a26a3b9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RecourseStatusDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RecourseStatusAxis_019e2245-a5ab-7571-8916-d1f55a26a3b9" xlink:to="loc_us-gaap_RecourseStatusDomain_019e2245-a5ab-7571-8916-d1f55a26a3b9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RecourseStatusDomain_019e2245-a5ab-7bc6-98e0-f82699a46461" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RecourseStatusDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RecourseStatusAxis_019e2245-a5ab-7571-8916-d1f55a26a3b9" xlink:to="loc_us-gaap_RecourseStatusDomain_019e2245-a5ab-7bc6-98e0-f82699a46461" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonrecourseMember_019e2245-a5ab-70c5-93e3-1f63e0cd894f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonrecourseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RecourseStatusDomain_019e2245-a5ab-7bc6-98e0-f82699a46461" xlink:to="loc_us-gaap_NonrecourseMember_019e2245-a5ab-70c5-93e3-1f63e0cd894f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_RestrictedCashFairValueDisclosure_019e2245-a5ab-7c58-8a59-fa0b0beef789" xlink:href="lad-20260630.xsd#lad_RestrictedCashFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e2245-a5ab-72cc-84c9-17d41f3d1a64" xlink:to="loc_lad_RestrictedCashFairValueDisclosure_019e2245-a5ab-7c58-8a59-fa0b0beef789" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNi_019e2245-a5ab-70a5-b4ce-3f647f6039d9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquitySecuritiesFvNi"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e2245-a5ab-72cc-84c9-17d41f3d1a64" xlink:to="loc_us-gaap_EquitySecuritiesFvNi_019e2245-a5ab-70a5-b4ce-3f647f6039d9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_019e2245-a5ab-7b71-ab32-92ed6dc49312" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e2245-a5ab-72cc-84c9-17d41f3d1a64" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_019e2245-a5ab-7b71-ab32-92ed6dc49312" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentsFairValueDisclosure_019e2245-a5ab-7c07-aa66-02311e067218" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestmentsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e2245-a5ab-72cc-84c9-17d41f3d1a64" xlink:to="loc_us-gaap_EquityMethodInvestmentsFairValueDisclosure_019e2245-a5ab-7c07-aa66-02311e067218" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_019e2245-a5ab-7172-87a6-319e06de580a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e2245-a5ab-72cc-84c9-17d41f3d1a64" xlink:to="loc_us-gaap_DerivativeAssets_019e2245-a5ab-7172-87a6-319e06de580a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration_019e2245-a5ab-797f-bb7c-761bf5bfae1a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeAssets_019e2245-a5ab-7172-87a6-319e06de580a" xlink:to="loc_us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration_019e2245-a5ab-797f-bb7c-761bf5bfae1a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_019e2245-a5ab-7525-a054-6551f513e947" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e2245-a5ab-72cc-84c9-17d41f3d1a64" xlink:to="loc_us-gaap_DerivativeLiabilities_019e2245-a5ab-7525-a054-6551f513e947" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration_019e2245-a5ab-73bc-8314-c641364a7925" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLiabilities_019e2245-a5ab-7525-a054-6551f513e947" xlink:to="loc_us-gaap_DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration_019e2245-a5ab-73bc-8314-c641364a7925" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtFairValue_019e2245-a5ab-70ce-9c1a-684e0ab82406" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e2245-a5ab-72cc-84c9-17d41f3d1a64" xlink:to="loc_us-gaap_LongTermDebtFairValue_019e2245-a5ab-70ce-9c1a-684e0ab82406" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019e2245-a5ab-7979-885f-f812536b2047" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019e2245-a5ab-72cc-84c9-17d41f3d1a64" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019e2245-a5ab-7979-885f-f812536b2047" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lithia.com/role/ACQUISITIONSScheduleofRevenueandOperatingIncomefromAcquisitionsDetails" xlink:type="simple" xlink:href="lad-20260630.xsd#ACQUISITIONSScheduleofRevenueandOperatingIncomefromAcquisitionsDetails"/>
  <link:definitionLink xlink:role="http://www.lithia.com/role/ACQUISITIONSScheduleofRevenueandOperatingIncomefromAcquisitionsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_019e2245-a5ab-7c08-aa0e-3cbcc9ff697b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019e2245-a5ab-74eb-97e4-b3797a18e393" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e2245-a5ab-7c08-aa0e-3cbcc9ff697b" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019e2245-a5ab-74eb-97e4-b3797a18e393" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_019e2245-a5ab-7a54-8426-c5438d9d281a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019e2245-a5ab-74eb-97e4-b3797a18e393" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_019e2245-a5ab-7a54-8426-c5438d9d281a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e2245-a5ab-7a54-8426-c5438d9d281a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_019e2245-a5ab-7a54-8426-c5438d9d281a" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e2245-a5ab-7a54-8426-c5438d9d281a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e2245-a5ab-728a-b60e-43ba34a95e43" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_019e2245-a5ab-7a54-8426-c5438d9d281a" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e2245-a5ab-728a-b60e-43ba34a95e43" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_A2026AcquisitionMember_019e2245-a5ab-7af9-bf00-69da080da185" xlink:href="lad-20260630.xsd#lad_A2026AcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e2245-a5ab-728a-b60e-43ba34a95e43" xlink:to="loc_lad_A2026AcquisitionMember_019e2245-a5ab-7af9-bf00-69da080da185" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_019e2245-a5ab-7c32-b593-a846635d6fd2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e2245-a5ab-7c08-aa0e-3cbcc9ff697b" xlink:to="loc_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_019e2245-a5ab-7c32-b593-a846635d6fd2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual_019e2245-a5ab-7ba0-a814-a5186b0b60c7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e2245-a5ab-7c08-aa0e-3cbcc9ff697b" xlink:to="loc_us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual_019e2245-a5ab-7ba0-a814-a5186b0b60c7" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lithia.com/role/ACQUISITIONSScheduleofAssetsAcquiredandLiabilitiesAssumedDetails" xlink:type="simple" xlink:href="lad-20260630.xsd#ACQUISITIONSScheduleofAssetsAcquiredandLiabilitiesAssumedDetails"/>
  <link:definitionLink xlink:role="http://www.lithia.com/role/ACQUISITIONSScheduleofAssetsAcquiredandLiabilitiesAssumedDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_019e2245-a5ab-7f3d-933e-ee4aeaecf060" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019e2245-a5ab-7fc1-9c50-00eba6f4efcf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e2245-a5ab-7f3d-933e-ee4aeaecf060" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019e2245-a5ab-7fc1-9c50-00eba6f4efcf" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_019e2245-a5ab-7f7a-84f8-41d09faf4e70" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019e2245-a5ab-7fc1-9c50-00eba6f4efcf" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_019e2245-a5ab-7f7a-84f8-41d09faf4e70" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e2245-a5ab-7f7a-84f8-41d09faf4e70_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_019e2245-a5ab-7f7a-84f8-41d09faf4e70" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e2245-a5ab-7f7a-84f8-41d09faf4e70_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e2245-a5ab-7728-b07e-3c8dd45fb9ea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_019e2245-a5ab-7f7a-84f8-41d09faf4e70" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e2245-a5ab-7728-b07e-3c8dd45fb9ea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_A2026AcquisitionMember_019e2245-a5ab-7978-8159-7f4637da8ef8" xlink:href="lad-20260630.xsd#lad_A2026AcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019e2245-a5ab-7728-b07e-3c8dd45fb9ea" xlink:to="loc_lad_A2026AcquisitionMember_019e2245-a5ab-7978-8159-7f4637da8ef8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_019e2245-a5ab-7bc7-abec-5d1e5464b3b8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e2245-a5ab-7f3d-933e-ee4aeaecf060" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_019e2245-a5ab-7bc7-abec-5d1e5464b3b8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_019e2245-a5ab-74d3-8d95-b1a6c55026ed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationConsiderationTransferred1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e2245-a5ab-7f3d-933e-ee4aeaecf060" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_019e2245-a5ab-74d3-8d95-b1a6c55026ed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_019e8248-dfff-71b9-8aa5-cd339318f601" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e2245-a5ab-7f3d-933e-ee4aeaecf060" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_019e8248-dfff-71b9-8aa5-cd339318f601" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_019e2245-a5ab-7068-8ef8-45df53c9da28" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e2245-a5ab-7f3d-933e-ee4aeaecf060" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_019e2245-a5ab-7068-8ef8-45df53c9da28" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_019e2245-a5ab-7f45-8e8a-d816c2fe8b14" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e2245-a5ab-7f3d-933e-ee4aeaecf060" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_019e2245-a5ab-7f45-8e8a-d816c2fe8b14" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_019e2245-a5ab-748a-a36d-99bd5b754c1c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e2245-a5ab-7f3d-933e-ee4aeaecf060" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_019e2245-a5ab-748a-a36d-99bd5b754c1c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFloorPlanDebt_019e8248-dfff-7e3c-9d4d-0925968a1e58" xlink:href="lad-20260630.xsd#lad_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFloorPlanDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e2245-a5ab-7f3d-933e-ee4aeaecf060" xlink:to="loc_lad_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFloorPlanDebt_019e8248-dfff-7e3c-9d4d-0925968a1e58" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_019e8248-dfff-7704-8a4c-f848b731f208" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e2245-a5ab-7f3d-933e-ee4aeaecf060" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_019e8248-dfff-7704-8a4c-f848b731f208" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFinanceLeaseObligations_019e2245-a5ab-7acc-9bbc-3e57e3772efe" xlink:href="lad-20260630.xsd#lad_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFinanceLeaseObligations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e2245-a5ab-7f3d-933e-ee4aeaecf060" xlink:to="loc_lad_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFinanceLeaseObligations_019e2245-a5ab-7acc-9bbc-3e57e3772efe" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherLiabilitiesAndDeferredRevenue_019e2245-a5ab-717f-bd7c-6ec8908c8e3b" xlink:href="lad-20260630.xsd#lad_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherLiabilitiesAndDeferredRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e2245-a5ab-7f3d-933e-ee4aeaecf060" xlink:to="loc_lad_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherLiabilitiesAndDeferredRevenue_019e2245-a5ab-717f-bd7c-6ec8908c8e3b" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_019e2245-a5ab-7029-93eb-47bd7c6d3570" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019e2245-a5ab-7f3d-933e-ee4aeaecf060" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_019e2245-a5ab-7029-93eb-47bd7c6d3570" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lithia.com/role/SEGMENTSScheduleofCertainFinancialInformationonaSegmentBasisDetails" xlink:type="simple" xlink:href="lad-20260630.xsd#SEGMENTSScheduleofCertainFinancialInformationonaSegmentBasisDetails"/>
  <link:definitionLink xlink:role="http://www.lithia.com/role/SEGMENTSScheduleofCertainFinancialInformationonaSegmentBasisDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_019e2245-a67d-7ca9-a882-03129126ae4c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e2245-a5ab-7491-9ac5-10b4f096032a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e2245-a67d-7ca9-a882-03129126ae4c" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e2245-a5ab-7491-9ac5-10b4f096032a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_019e2245-a67d-73a7-802a-8fdc814db6d5" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e2245-a5ab-7491-9ac5-10b4f096032a" xlink:to="loc_srt_ConsolidationItemsAxis_019e2245-a67d-73a7-802a-8fdc814db6d5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_019e2245-a67d-73a7-802a-8fdc814db6d5_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_019e2245-a67d-73a7-802a-8fdc814db6d5" xlink:to="loc_srt_ConsolidationItemsDomain_019e2245-a67d-73a7-802a-8fdc814db6d5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_019e2245-a67d-7a9f-86a5-359a3d075c3d" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_019e2245-a67d-73a7-802a-8fdc814db6d5" xlink:to="loc_srt_ConsolidationItemsDomain_019e2245-a67d-7a9f-86a5-359a3d075c3d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_019e2245-a67d-7c74-a8c0-44bedee3f3c3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_019e2245-a67d-7a9f-86a5-359a3d075c3d" xlink:to="loc_us-gaap_OperatingSegmentsMember_019e2245-a67d-7c74-a8c0-44bedee3f3c3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_CorporateAndEliminationsMember_019e2245-a67d-719e-b416-f83208c6b4af" xlink:href="lad-20260630.xsd#lad_CorporateAndEliminationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_019e2245-a67d-7a9f-86a5-359a3d075c3d" xlink:to="loc_lad_CorporateAndEliminationsMember_019e2245-a67d-719e-b416-f83208c6b4af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MaterialReconcilingItemsMember_019e2245-a67d-7b6c-a4b4-e083dd4b4830" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MaterialReconcilingItemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_019e2245-a67d-7a9f-86a5-359a3d075c3d" xlink:to="loc_us-gaap_MaterialReconcilingItemsMember_019e2245-a67d-7b6c-a4b4-e083dd4b4830" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019e2245-a67d-70a3-93df-33f9e76409f2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019e2245-a5ab-7491-9ac5-10b4f096032a" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019e2245-a67d-70a3-93df-33f9e76409f2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e2245-a67d-70a3-93df-33f9e76409f2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e2245-a67d-70a3-93df-33f9e76409f2" xlink:to="loc_us-gaap_SegmentDomain_019e2245-a67d-70a3-93df-33f9e76409f2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019e2245-a67d-704e-96c1-7f1645381753" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019e2245-a67d-70a3-93df-33f9e76409f2" xlink:to="loc_us-gaap_SegmentDomain_019e2245-a67d-704e-96c1-7f1645381753" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_VehicleOperationsMember_019e2245-a67d-70bd-8d3b-0c89e832bf69" xlink:href="lad-20260630.xsd#lad_VehicleOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e2245-a67d-704e-96c1-7f1645381753" xlink:to="loc_lad_VehicleOperationsMember_019e2245-a67d-70bd-8d3b-0c89e832bf69" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_FinancingOperationsMember_019e2245-a67d-7374-a16e-4df997fee276" xlink:href="lad-20260630.xsd#lad_FinancingOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019e2245-a67d-704e-96c1-7f1645381753" xlink:to="loc_lad_FinancingOperationsMember_019e2245-a67d-7374-a16e-4df997fee276" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019e2245-a67d-735d-9abb-ec77f0f31b61" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e2245-a67d-7ca9-a882-03129126ae4c" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019e2245-a67d-735d-9abb-ec77f0f31b61" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_019e2245-a67d-769c-a541-80861afbb475" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GrossProfit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e2245-a67d-7ca9-a882-03129126ae4c" xlink:to="loc_us-gaap_GrossProfit_019e2245-a67d-769c-a541-80861afbb475" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_FloorPlanInterestExpense_019e2245-a67d-70ca-bac6-e3dc27de1c52" xlink:href="lad-20260630.xsd#lad_FloorPlanInterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e2245-a67d-7ca9-a882-03129126ae4c" xlink:to="loc_lad_FloorPlanInterestExpense_019e2245-a67d-70ca-bac6-e3dc27de1c52" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LaborAndRelatedExpense_019e2245-a67d-783c-b74e-28cc28dce6f4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LaborAndRelatedExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e2245-a67d-7ca9-a882-03129126ae4c" xlink:to="loc_us-gaap_LaborAndRelatedExpense_019e2245-a67d-783c-b74e-28cc28dce6f4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_RentAndFacilityExpense_019e2245-a67d-75e7-ac74-c372d01ea003" xlink:href="lad-20260630.xsd#lad_RentAndFacilityExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e2245-a67d-7ca9-a882-03129126ae4c" xlink:to="loc_lad_RentAndFacilityExpense_019e2245-a67d-75e7-ac74-c372d01ea003" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdvertisingExpense_019e2245-a67d-7d92-af80-266f8d129f07" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdvertisingExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e2245-a67d-7ca9-a882-03129126ae4c" xlink:to="loc_us-gaap_AdvertisingExpense_019e2245-a67d-7d92-af80-266f8d129f07" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_OtherVehicleOperationsExpenses_019e2245-a67d-72e5-ba8a-519161a7eb57" xlink:href="lad-20260630.xsd#lad_OtherVehicleOperationsExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e2245-a67d-7ca9-a882-03129126ae4c" xlink:to="loc_lad_OtherVehicleOperationsExpenses_019e2245-a67d-72e5-ba8a-519161a7eb57" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019e2245-a67d-791b-96e0-611606d4cbef" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e2245-a67d-7ca9-a882-03129126ae4c" xlink:to="loc_us-gaap_OperatingIncomeLoss_019e2245-a67d-791b-96e0-611606d4cbef" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestAndFeeIncomeLoansAndLeases_019e2245-a67d-7c3a-ac22-b88c881b4f82" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestAndFeeIncomeLoansAndLeases"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e2245-a67d-7ca9-a882-03129126ae4c" xlink:to="loc_us-gaap_InterestAndFeeIncomeLoansAndLeases_019e2245-a67d-7c3a-ac22-b88c881b4f82" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseOperating_019e2245-a67d-7c8e-90da-f8da80ae807a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseOperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e2245-a67d-7ca9-a882-03129126ae4c" xlink:to="loc_us-gaap_InterestExpenseOperating_019e2245-a67d-7c8e-90da-f8da80ae807a" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNet_019e2245-a67d-7198-b92f-a90aaaf7350f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeExpenseNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e2245-a67d-7ca9-a882-03129126ae4c" xlink:to="loc_us-gaap_InterestIncomeExpenseNet_019e2245-a67d-7198-b92f-a90aaaf7350f" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseIncome_019e2245-a67d-7c3b-9d35-05de515cf20b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LeaseIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e2245-a67d-7ca9-a882-03129126ae4c" xlink:to="loc_us-gaap_LeaseIncome_019e2245-a67d-7c3b-9d35-05de515cf20b" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseCost_019e2245-a67d-7c4f-bc25-2353365eb731" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LeaseCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e2245-a67d-7ca9-a882-03129126ae4c" xlink:to="loc_us-gaap_LeaseCost_019e2245-a67d-7c4f-bc25-2353365eb731" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_lad_LeaseIncomeNet_019e2245-a67d-7177-99ad-e3d278dcff60" xlink:href="lad-20260630.xsd#lad_LeaseIncomeNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e2245-a67d-7ca9-a882-03129126ae4c" xlink:to="loc_lad_LeaseIncomeNet_019e2245-a67d-7177-99ad-e3d278dcff60" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForDoubtfulAccounts_019e2245-a67d-708b-b082-652fcbb233b1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProvisionForDoubtfulAccounts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e2245-a67d-7ca9-a882-03129126ae4c" xlink:to="loc_us-gaap_ProvisionForDoubtfulAccounts_019e2245-a67d-708b-b082-652fcbb233b1" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCostAndExpenseOperating_019e2245-a67d-7d94-aa7a-6255d3cbfedb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherCostAndExpenseOperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e2245-a67d-7ca9-a882-03129126ae4c" xlink:to="loc_us-gaap_OtherCostAndExpenseOperating_019e2245-a67d-7d94-aa7a-6255d3cbfedb" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherOperatingIncome_019e2245-a67d-79e3-ae8b-78e5e8ee6aa8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherOperatingIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e2245-a67d-7ca9-a882-03129126ae4c" xlink:to="loc_us-gaap_OtherOperatingIncome_019e2245-a67d-79e3-ae8b-78e5e8ee6aa8" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e2245-a67d-7449-8e95-94230cd77baf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e2245-a67d-7ca9-a882-03129126ae4c" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e2245-a67d-7449-8e95-94230cd77baf" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_019e2245-a67d-7d28-9027-5c87575bb230" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e2245-a67d-7ca9-a882-03129126ae4c" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_019e2245-a67d-7d28-9027-5c87575bb230" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseDebt_019e2245-a67d-7d0f-b954-58e24167b15d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e2245-a67d-7ca9-a882-03129126ae4c" xlink:to="loc_us-gaap_InterestExpenseDebt_019e2245-a67d-7d0f-b954-58e24167b15d" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_019e2245-a67d-7f60-9f4b-04f83f4f65f1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019e2245-a67d-7ca9-a882-03129126ae4c" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_019e2245-a67d-7f60-9f4b-04f83f4f65f1" xlink:type="arc" order="20"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lithia.com/role/SEGMENTSScheduleofRevenuefromExternalCustomersandLongLivedAssetsbyGeographicalAreasDetails" xlink:type="simple" xlink:href="lad-20260630.xsd#SEGMENTSScheduleofRevenuefromExternalCustomersandLongLivedAssetsbyGeographicalAreasDetails"/>
  <link:definitionLink xlink:role="http://www.lithia.com/role/SEGMENTSScheduleofRevenuefromExternalCustomersandLongLivedAssetsbyGeographicalAreasDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_019e2245-a67d-7aea-afc1-128242861886" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_019e2245-a67d-78e9-b406-cf8f29f4cce0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_019e2245-a67d-7aea-afc1-128242861886" xlink:to="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_019e2245-a67d-78e9-b406-cf8f29f4cce0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_019e2245-a67d-7b04-80a1-eaf92a236db8" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_019e2245-a67d-78e9-b406-cf8f29f4cce0" xlink:to="loc_srt_StatementGeographicalAxis_019e2245-a67d-7b04-80a1-eaf92a236db8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019e2245-a67d-7b04-80a1-eaf92a236db8_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_019e2245-a67d-7b04-80a1-eaf92a236db8" xlink:to="loc_srt_SegmentGeographicalDomain_019e2245-a67d-7b04-80a1-eaf92a236db8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019e2245-a67d-7e6c-839b-d4ec905e65ed" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_019e2245-a67d-7b04-80a1-eaf92a236db8" xlink:to="loc_srt_SegmentGeographicalDomain_019e2245-a67d-7e6c-839b-d4ec905e65ed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_019e2245-a67d-7187-93d1-55720903cc0a" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019e2245-a67d-7e6c-839b-d4ec905e65ed" xlink:to="loc_country_US_019e2245-a67d-7187-93d1-55720903cc0a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_GB_019e2245-a67d-77d3-9d37-90aceb0b23b6" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_GB"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019e2245-a67d-7e6c-839b-d4ec905e65ed" xlink:to="loc_country_GB_019e2245-a67d-77d3-9d37-90aceb0b23b6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_CA_019e2245-a67d-72ec-9689-5436f7f8dee0" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_CA"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019e2245-a67d-7e6c-839b-d4ec905e65ed" xlink:to="loc_country_CA_019e2245-a67d-72ec-9689-5436f7f8dee0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019e2245-a67d-7972-84a5-56376622143a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_019e2245-a67d-7aea-afc1-128242861886" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019e2245-a67d-7972-84a5-56376622143a" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://fasb.org/srt/role/srt-eedm/ExtensibleEnumerationLists" xlink:type="simple" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-roles-2026.xsd#eedm1"/>
  <link:definitionLink xlink:role="http://fasb.org/srt/role/srt-eedm/ExtensibleEnumerationLists" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract" xlink:to="loc_us-gaap_OtherAssetsNoncurrent" xlink:type="arc" order="101"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent" xlink:type="arc" order="31"/>
  </link:definitionLink>
</link:linkbase>
