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  <xsd:element name="EmployeeBenefitPlanYearsOfVestingServiceAxis" id="mga_EmployeeBenefitPlanYearsOfVestingServiceAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="EmployeeBenefitPlanYearsOfVestingServiceDomain" id="mga_EmployeeBenefitPlanYearsOfVestingServiceDomain" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="EmployeeBenefitPlanYearsOfVestingServiceTrancheOneMember" id="mga_EmployeeBenefitPlanYearsOfVestingServiceTrancheOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="EmployeeBenefitPlanYearsOfVestingServiceTrancheTwoMember" id="mga_EmployeeBenefitPlanYearsOfVestingServiceTrancheTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="EmployeeBenefitPlanYearsOfVestingServiceTrancheThreeMember" id="mga_EmployeeBenefitPlanYearsOfVestingServiceTrancheThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="EmployeeBenefitPlanYearsOfVestingServiceTrancheFourMember" id="mga_EmployeeBenefitPlanYearsOfVestingServiceTrancheFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="EmployeeBenefitPlanYearsOfVestingServiceTrancheFiveMember" id="mga_EmployeeBenefitPlanYearsOfVestingServiceTrancheFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="EmployeeBenefitPlanYearsOfVestingServiceTrancheSixMember" id="mga_EmployeeBenefitPlanYearsOfVestingServiceTrancheSixMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="EmployeeBenefitPlanVestingPercentage" id="mga_EmployeeBenefitPlanVestingPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EmployeeBenefitPlanAllocatedOrReallocatedInvestmentsMaximumVestingPeriod" id="mga_EmployeeBenefitPlanAllocatedOrReallocatedInvestmentsMaximumVestingPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EmployeeBenefitPlanRetirementAgeForImmediateFullVesting" id="mga_EmployeeBenefitPlanRetirementAgeForImmediateFullVesting" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EmployeeBenefitPlanNumberOfConsecutiveOneYearBreaksInServiceForForfeiture" id="mga_EmployeeBenefitPlanNumberOfConsecutiveOneYearBreaksInServiceForForfeiture" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EmployeeBenefitPlanForfeitedNonvestedAccountServiceBreakPeriod" id="mga_EmployeeBenefitPlanForfeitedNonvestedAccountServiceBreakPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EmployeeBenefitPlanVestedBenefitsDistributionPeriodOfContinuousYearsOfService" id="mga_EmployeeBenefitPlanVestedBenefitsDistributionPeriodOfContinuousYearsOfService" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EmployeeBenefitPlanParticipantAgeForVestedBenefitsDistribution" id="mga_EmployeeBenefitPlanParticipantAgeForVestedBenefitsDistribution" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EmployeeBenefitPlanNoteReceivableFromParticipantTerm" id="mga_EmployeeBenefitPlanNoteReceivableFromParticipantTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EmployeeBenefitPlanNoteReceivableFromParticipantMaximumTermIfProceedsUsedToPurchasePrimaryResidence" id="mga_EmployeeBenefitPlanNoteReceivableFromParticipantMaximumTermIfProceedsUsedToPurchasePrimaryResidence" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EmployeeBenefitPlanNoteReceivableFromParticipantBasisSpreadOnPrimeRate" id="mga_EmployeeBenefitPlanNoteReceivableFromParticipantBasisSpreadOnPrimeRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EmployeeBenefitPlanPercentOfDeferredProfitSharingInvestedInEmployerSecurities" id="mga_EmployeeBenefitPlanPercentOfDeferredProfitSharingInvestedInEmployerSecurities" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EmployeeBenefitPlanEmployerSecuritiesMaximumDiversificationPercent" id="mga_EmployeeBenefitPlanEmployerSecuritiesMaximumDiversificationPercent" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EmployeeBenefitPlanStableValueFundMember" id="mga_EmployeeBenefitPlanStableValueFundMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="EmployeeBenefitPlanInvestmentProhibitionPeriodForMovingBackIntoFundAfterLiquidation" id="mga_EmployeeBenefitPlanInvestmentProhibitionPeriodForMovingBackIntoFundAfterLiquidation" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EmployeeBenefitPlanInvestmentMaximumDelayForWithdrawalOrTransferRequests" id="mga_EmployeeBenefitPlanInvestmentMaximumDelayForWithdrawalOrTransferRequests" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EmployeeBenefitPlanInvestmentTransferPeriod" id="mga_EmployeeBenefitPlanInvestmentTransferPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EmployeeBenefitPlanDeferredIncomeAnnuitiesMember" id="mga_EmployeeBenefitPlanDeferredIncomeAnnuitiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="EmployeeBenefitPlanLifeInsurancePoliciesMember" id="mga_EmployeeBenefitPlanLifeInsurancePoliciesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecreaseFromInterFundTransfers" id="mga_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecreaseFromInterFundTransfers" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="EmployeeBenefitPlanEmployerMember" id="mga_EmployeeBenefitPlanEmployerMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="EmployeeBenefitPlanVestingServicePeriodAndVestedPercentageTableTextBlock" id="mga_EmployeeBenefitPlanVestingServicePeriodAndVestedPercentageTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="UnionBondTrustCompanyPrincipalStableValueMember" id="mga_UnionBondTrustCompanyPrincipalStableValueMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PrincipalLifeInsuranceCompanyPrincipalPensionBuilderMember" id="mga_PrincipalLifeInsuranceCompanyPrincipalPensionBuilderMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PrinEquityIncomeSaZPooledSeparateAccountsMember" id="mga_PrinEquityIncomeSaZPooledSeparateAccountsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PrinDivIntlSaI5PooledSeparateAccountsMember" id="mga_PrinDivIntlSaI5PooledSeparateAccountsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PrinCorePlusBondSepAcctZPooledSeparateAccountsMember" id="mga_PrinCorePlusBondSepAcctZPooledSeparateAccountsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PrinU.s.PropertySaI5PooledSeparateAccountsMember" id="mga_PrinU.s.PropertySaI5PooledSeparateAccountsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="JpmcbLargeCapGrowthCfACommonCollectiveTrustsMember" id="mga_JpmcbLargeCapGrowthCfACommonCollectiveTrustsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PrinLifetimeHyb2030CitQCommonCollectiveTrustsMember" id="mga_PrinLifetimeHyb2030CitQCommonCollectiveTrustsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PrinLifetimeHyb2040CitQCommonCollectiveTrustsMember" id="mga_PrinLifetimeHyb2040CitQCommonCollectiveTrustsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PrinLifetimeHyb2050CitQCommonCollectiveTrustsMember" id="mga_PrinLifetimeHyb2050CitQCommonCollectiveTrustsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PrinLifetimeHyb2020CitQCommonCollectiveTrustsMember" id="mga_PrinLifetimeHyb2020CitQCommonCollectiveTrustsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PrinLifetimeHyb2045CitQCommonCollectiveTrustsMember" id="mga_PrinLifetimeHyb2045CitQCommonCollectiveTrustsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PrinLifetimeHyb2035CitQCommonCollectiveTrustsMember" id="mga_PrinLifetimeHyb2035CitQCommonCollectiveTrustsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PrinLifetimeHyb2055CitQCommonCollectiveTrustsMember" id="mga_PrinLifetimeHyb2055CitQCommonCollectiveTrustsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PrinLifetimeHyb2060CitQCommonCollectiveTrustsMember" id="mga_PrinLifetimeHyb2060CitQCommonCollectiveTrustsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PrinLifetimeHyb2025CitQCommonCollectiveTrustsMember" id="mga_PrinLifetimeHyb2025CitQCommonCollectiveTrustsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PrinLifetimeHybIncCitQCommonCollectiveTrustsMember" id="mga_PrinLifetimeHybIncCitQCommonCollectiveTrustsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PrinLifetimeHyb2065CitQCommonCollectiveTrustsMember" id="mga_PrinLifetimeHyb2065CitQCommonCollectiveTrustsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PrinLifetimeHyb2015CitQCommonCollectiveTrustsMember" id="mga_PrinLifetimeHyb2015CitQCommonCollectiveTrustsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PrinLifetimeHyb2070CitQCommonCollectiveTrustsMember" id="mga_PrinLifetimeHyb2070CitQCommonCollectiveTrustsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="MagnaInternationalInc.CommonStockMember" id="mga_MagnaInternationalInc.CommonStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="Fidelity500IndexFundMutualFundsMember" id="mga_Fidelity500IndexFundMutualFundsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="FidelitySmCapIndexFundMutualFundsMember" id="mga_FidelitySmCapIndexFundMutualFundsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="FidelityMidCpIndexFundMutualFundsMember" id="mga_FidelityMidCpIndexFundMutualFundsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="FidelityUsBondIndexFundMutualFundsMember" id="mga_FidelityUsBondIndexFundMutualFundsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="FidelityTotalIntIndexFundMutualFundsMember" id="mga_FidelityTotalIntIndexFundMutualFundsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="VanguardEmergingMktStkIndexFundMutualFundsMember" id="mga_VanguardEmergingMktStkIndexFundMutualFundsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NorthwesternMutualLifeInsuranceCompanyLifeInsurancePoliciesMember" id="mga_NorthwesternMutualLifeInsuranceCompanyLifeInsurancePoliciesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="EmployeeBenefitPlanParticipantContributionPretaxAnnualBonusToTotalCompensationPercentage" id="mga_EmployeeBenefitPlanParticipantContributionPretaxAnnualBonusToTotalCompensationPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="Plan401KMember" id="mga_Plan401KMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="EmployeeBenefitPlanParticipantContributionNewHiresAutomaticEnrollmentAnnualCompensationToTotalCompensationPercentage" id="mga_EmployeeBenefitPlanParticipantContributionNewHiresAutomaticEnrollmentAnnualCompensationToTotalCompensationPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EmployeeBenefitPlanParticipantContributionNewHiresCoveredByCollectiveBargainingAgreementsAutomaticEnrollmentAnnualCompensationToTotalCompensationPercentage" id="mga_EmployeeBenefitPlanParticipantContributionNewHiresCoveredByCollectiveBargainingAgreementsAutomaticEnrollmentAnnualCompensationToTotalCompensationPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EmployeeBenefitPlanVestingPercentageInEventOfPlanTermination" id="mga_EmployeeBenefitPlanVestingPercentageInEventOfPlanTermination" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="PrincipalGlobalInvestorsTrustCoMember" id="mga_PrincipalGlobalInvestorsTrustCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PrincipalLifeInsuranceCompanyMember" id="mga_PrincipalLifeInsuranceCompanyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="MassMutualMember" id="mga_MassMutualMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="MagnaInternationalInc.Member" id="mga_MagnaInternationalInc.Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="JpmorganChaseBankN.a.Member" id="mga_JpmorganChaseBankN.a.Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="GeodeCapitalMgmtTrustCoLlcMember" id="mga_GeodeCapitalMgmtTrustCoLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="FidelityInvestmentsMember" id="mga_FidelityInvestmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="VanguardGroupMember" id="mga_VanguardGroupMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NorthwesternMutualLifeInsuranceCoMember" id="mga_NorthwesternMutualLifeInsuranceCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="EmployeeBenefitPlanFullyBenefitResponsiveInvestmentContractsMember" id="mga_EmployeeBenefitPlanFullyBenefitResponsiveInvestmentContractsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="EbpInvestmentExcludingPlanInterestInMasterTrustFairValueExcludingNetAssetValue" id="mga_EbpInvestmentExcludingPlanInterestInMasterTrustFairValueExcludingNetAssetValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="EbpInvestmentExcludingPlanInterestInMasterTrustNetAssetValue" id="mga_EbpInvestmentExcludingPlanInterestInMasterTrustNetAssetValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="EbpChangeInNetAssetAvailableForBenefitTransferToPlan" id="mga_EbpChangeInNetAssetAvailableForBenefitTransferToPlan" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="EbpFullyBenefitResponsiveInvestmentContractGuaranteedReturn" id="mga_EbpFullyBenefitResponsiveInvestmentContractGuaranteedReturn" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EbpChangeInNetAssetAvailableForBenefitTransferFromPlan" id="mga_EbpChangeInNetAssetAvailableForBenefitTransferFromPlan" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
</xsd:schema>
