Description of Business and Summary of Significant Accounting Policies (Policies)	6 Months Ended
Jun. 30, 2025
Accounting Policies [Abstract]
Description of Business	Description of Business Aeva Technologies, Inc. (the “Company”), through its Frequency Modulated Continuous Wave (“FMCW”) sensing technology, designs a 4D LiDAR-on-chip that, along with its proprietary software applications, has the potential to enable the adoption of LiDAR across broad applications from automated driving to consumer electronics, consumer health, industrial automation and security application. The Company’s common stock and warrants are listed on the Nasdaq Global Select Market under the symbols “AEVA” and "AEVAW", respectively.
Basis of Presentation and Unaudited Interim Financial Statements	Basis of Presentation and Unaudited Interim Financial Statements The condensed consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP"). The condensed consolidated financial statements include the accounts of the Company’s wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated upon consolidation. The accompanying condensed consolidated financial statements are unaudited and have been prepared on the same basis as the annual consolidated financial statements and, in the opinion of management, reflect all adjustments, which include only normal recurring adjustments, necessary to present fairly the Company’s financial position, results of operations, comprehensive loss and cash flows for the periods presented, but are not necessarily indicative of the results of operations to be anticipated for any future annual or interim period. These condensed consolidated financial statements and other information presented in this Form 10-Q should be read in conjunction with the consolidated financial statements and the related notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2024 filed with the SEC. On March 18, 2024, the Company filed a Certificate of Amendment to its Amended and Restated Certificate of Incorporation (the “Amendment”) with the Secretary of State of the State of Delaware to effect a 1-for-5 reverse stock split (the “Reverse Stock Split”) of the Company’s shares of common stock, $0.0001 par value (the “common stock”). Pursuant to the Reverse Stock Split, every five (5) shares of issued and outstanding shares of common stock were combined into one (1) share of common stock. Accordingly, unless indicated otherwise, all the current period and historical per share data, number of shares issued and outstanding, stock awards, and other common stock equivalents for the periods presented in this Interim Report on Form 10-Q have been adjusted retroactively, where applicable, to reflect the Reverse Stock Split. There was no change to the shares authorized or in the par value per share of common stock of $0.0001. The Reverse Stock Split affected all stockholders uniformly and did not alter any stockholder’s percentage interest in the Company’s equity. The Company did not issue fractional shares in connection with the Reverse Stock Split. Stockholders who were otherwise entitled to fractional shares of common stock were instead entitled to receive a proportional cash payment. The number of shares of common stock issuable under the Company's equity incentive plans and exercisable under the outstanding warrants were also proportionately adjusted.
Principal of Consolidation and Liquidity	Principles of Consolidation and Liquidity The condensed consolidated financial statements are prepared in accordance with U.S. GAAP. The condensed consolidated financial statements include the accounts of the Company’s wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. The Company has funded its operations primarily through the business combination with InterPrivate Acquisition Corp. (the Company’s predecessor, which was originally incorporated in Delaware as a special purpose acquisition company (“IPV”)), on March 12, 2021 (the “Business Combination”) and issuances of stock. As of June 30, 2025, the Company’s existing sources of liquidity included cash and cash equivalents and marketable securities of $49.8 million. The Company has a limited history of operations and has incurred negative cash flows from operating activities and losses from operations in the past as reflected in the accumulated deficit of $839.5 million as of June 30, 2025. The Company expects to continue to incur operating losses due to the investments it intends to make in its business, including product development. As of June 30, 2025, the Company had certain financial liabilities (i.e., warrant and share subscription liability) measured at fair value with changes in fair value recorded in the condensed consolidated financial statements (Note 10). Increases in the Company’s stock price during the quarter and as of June 30, 2025, resulted in significant increases in the value of these financial liabilities (Note 3) with offsetting losses resulting in a total stockholders’ deficit as of the quarter-end. The warrant and share subscription liability are expected to result in share settlement, with net cash settlement as a remote outcome. As a result, management does not expect these financial liabilities to have a material impact on existing sources of liquidity. As such management believes that existing cash and cash equivalents, marketable securities, and the Standby Equity Purchase Agreement (the “Facility Agreement,” Note 10) will be sufficient to fund operating and capital expenditure requirements through at least 12 months from the date of issuance of these condensed consolidated financial statements.
Significant Risks and Uncertainties	Significant Risks and Uncertainties The Company is subject to those risks common in the technology industry and also those risks common to early stage companies, including, but not limited to, the possibility of not being able to successfully develop or market its products, technological obsolescence, competition, dependence on key personnel and key external alliances, the successful protection of its proprietary technologies, compliance with government regulations, and the possibility of not being able to obtain additional financing when needed.
Concentration of Credit Risk	Concentration of Credit Risk Financial instruments that potentially subject the Company to significant concentrations of credit risk consist primarily of cash, cash equivalents, marketable securities, and trade receivables. The Company maintains the majority of its cash and cash equivalents in accounts with large financial institutions. At times, balances in these accounts may exceed federally insured limits; however, to date, the Company has not incurred any losses on its deposits of cash and cash equivalents and believes the exposure to risk of loss is not material. Risks associated with the Company’s marketable securities is mitigated by investing in investment-grade rated securities when purchased. The Company’s accounts receivable are derived from customers located in North America, Asia, and Europe. The Company mitigates its credit risks by performing ongoing credit evaluations of its customers’ financial conditions and requires customer advance payments in certain circumstances. The Company generally does not require collateral. As of June 30, 2025, two customers accounted for 51%, and 25% of accounts receivable, respectively. As of December 31, 2024, five customers accounted for 18%, 16%, 13%, 11% and 10% of accounts receivable, respectively. As of June 30, 2025, two vendors accounted for 15% and 15% of the accounts payable, respectively. As of December 31, 2024, one vendor accounted for 40% of the accounts payable.
Warrants and Share Subscriptions	Warrants and Share Subscriptions The Company accounts for warrants and other equity-linked contracts (i.e., share subscriptions) as equity or liability-classified instruments based on an assessment of the instrument’s specific terms and applicable authoritative guidance in FASB ASC 480, Distinguishing Liabilities from Equity (“ASC 480”), and ASC 815-40, Derivatives and Hedging – Contract in Entity’s Own Equity (“ASC 815-40”). The Company first assesses whether a freestanding equity-linked instrument should be classified as a liability pursuant to ASC 480. Under ASC 480, a freestanding financial instrument is classified as a liability if it is mandatorily redeemable, requires the issuer to settle the instrument or the underlying shares by transferring cash or other assets, or must be settled by issuing a variable number of shares where the monetary value of the obligation is based solely or predominantly on a fixed monetary amount, variations in something other than the fair value of the issuer’s equity shares. If an equity-linked instrument does not trigger liability classification under ASC 480, the Company assesses whether the instrument meets all requirements for equity classification under ASC 815-40, including whether the instrument is indexed to the Company’s own common stock, among other conditions for equity classification. If not, the instrument is classified as a liability and is further analyzed to determine whether the instrument represents a derivative in its entirety. This assessment requires the use of professional judgment and requires reassessment of an instrument’s classification at each reporting period while the instrument remains outstanding. Equity-linked instruments that meet all equity classification conditions are recorded as a component of additional paid-in capital at issuance. Equity-linked instruments accounted for as liabilities are recognized and measured at fair value at inception and each reporting period the instrument remains outstanding. Any excess fair value over proceeds to be realized from the equity-linked instruments entered into at arm’s length, along with any changes in fair value, as determined at each reporting period, are recorded as a component of fair value loss on share subscription liability on the consolidated statements of operations and comprehensive loss. Changes in fair value are reported on the consolidated statements of cash flows as a non-cash reconciling item between net loss and net cash flows from operating activities.
Provision for Anticipated Losses on Contracts	Provision for Anticipated Losses on Contracts When estimated contract costs exceed expected consideration under contracts with a customer, the Company evaluates whether the nature of the contract is in the scope of Accounting Standards Codification (“ASC”) 605-35, Revenue Recognition - Construction-Type and Production-Type Contracts (“ASC 605-35”). If ASC 605-35 applies, the Company recognizes a provision for the entire anticipated losses on contracts as soon as the loss becomes evident. In determining the anticipated losses, the Company considers the principles in ASC 606-10-32-2 through 32-27 (except for the guidance in paragraphs 606-10-32-11 through 32-13 on constraining estimates of variable consideration) to determine the transaction price, adjusted to reflect the effects of the customer's credit risk. The costs used in arriving at the estimated loss on a contract shall include all costs of the type allocable to contracts under paragraphs 340-40-25-5 through 25-8. The provision for anticipated losses on contracts of $2.3 million is classified as a current liability and $1.5 million is classified as a noncurrent liability on the consolidated balance sheet and as a component of cost of revenue on the condensed consolidated statements of operations and comprehensive loss.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In December 2023, the FASB issued ASU 2023-09 “Income Taxes (Topics 740): Improvements to Income Tax Disclosures” to expand the disclosure requirements for income taxes, specifically related to the rate reconciliation and income taxes paid. Upon adoption, the Company will be required to disclose additional specified categories in the rate reconciliation in both percentage and dollar amounts. The Company will also be required to disclose the amount of income taxes paid disaggregated by jurisdiction, among other disclosure requirements. The standard is effective for annual periods beginning January 1, 2025, and the Company is currently assessing the effect that the updated standard will have on the condensed consolidated financial statements and related disclosures. In November 2024, the FASB issued ASU 2024-03 “Income Statement: Reporting Comprehensive Income-Expense Disaggregation Disclosures (Subtopic 220-40)” to improve the disclosures about an entity’s expenses. Upon adoption, the Company will be required to disclose in the notes to the financial statements a disaggregation of certain expense categories included within the expense captions on the face of the income statement. The standard is effective for the Company's 2027 annual period, and interim periods beginning in 2028, with early adoption permitted. The standard can be applied either prospectively or retrospectively. The Company is currently evaluating the potential effect that the updated standard will have on the condensed consolidated financial statements and related disclosures.

Description of Business and Summary of Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2025

Aeva Technologies, Inc. (the “Company”), through its Frequency Modulated Continuous Wave (“FMCW”) sensing technology, designs a 4D LiDAR-on-chip that, along with its proprietary software applications, has the potential to enable the adoption of LiDAR across broad applications from automated driving to consumer electronics, consumer health, industrial automation and security application.

The Company’s common stock and warrants are listed on the Nasdaq Global Select Market under the symbols “AEVA” and "AEVAW", respectively.

Basis of Presentation and Unaudited Interim Financial Statements

The condensed consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP"). The condensed consolidated financial statements include the accounts of the Company’s wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated upon consolidation.

The accompanying condensed consolidated financial statements are unaudited and have been prepared on the same basis as the annual consolidated financial statements and, in the opinion of management, reflect all adjustments, which include only normal recurring adjustments, necessary to present fairly the Company’s financial position, results of operations, comprehensive loss and cash flows for the periods presented, but are not necessarily indicative of the results of operations to be anticipated for any future annual or interim period.

These condensed consolidated financial statements and other information presented in this Form 10-Q should be read in conjunction with the consolidated financial statements and the related notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2024 filed with the SEC.

On March 18, 2024, the Company filed a Certificate of Amendment to its Amended and Restated Certificate of Incorporation (the “Amendment”) with the Secretary of State of the State of Delaware to effect a 1-for-5 reverse stock split (the “Reverse Stock Split”) of the Company’s shares of common stock, $0.0001 par value (the “common stock”). Pursuant to the Reverse Stock Split, every five (5) shares of issued and outstanding shares of common stock were combined into one (1) share of common stock. Accordingly, unless indicated otherwise, all the current period and historical per share data, number of shares issued and outstanding, stock awards, and other common stock equivalents for the periods presented in this Interim Report on Form 10-Q have been adjusted retroactively, where applicable, to reflect the Reverse Stock Split. There was no change to the shares authorized or in the par value per share of common stock of $0.0001.

The Reverse Stock Split affected all stockholders uniformly and did not alter any stockholder’s percentage interest in the Company’s equity. The Company did not issue fractional shares in connection with the Reverse Stock Split. Stockholders who were otherwise entitled to fractional shares of common stock were instead entitled to receive a proportional cash payment. The number of shares of common stock issuable under the Company's equity incentive plans and exercisable under the outstanding warrants were also proportionately adjusted.

Principal of Consolidation and Liquidity

Principles of Consolidation and Liquidity

The condensed consolidated financial statements are prepared in accordance with U.S. GAAP. The condensed consolidated financial statements include the accounts of the Company’s wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.

The Company has funded its operations primarily through the business combination with InterPrivate Acquisition Corp. (the Company’s predecessor, which was originally incorporated in Delaware as a special purpose acquisition company (“IPV”)), on March 12, 2021 (the “Business Combination”) and issuances of stock. As of June 30, 2025, the Company’s existing sources of liquidity included cash and cash equivalents and marketable securities of $49.8 million. The Company has a limited history of operations and has incurred negative cash flows from operating activities and losses from operations in the past as reflected in the accumulated deficit of $839.5 million as of June 30, 2025. The Company expects to continue to incur operating losses due to the investments it intends to make in its business, including product development.

As of June 30, 2025, the Company had certain financial liabilities (i.e., warrant and share subscription liability) measured at fair value with changes in fair value recorded in the condensed consolidated financial statements (Note 10). Increases in the Company’s stock price during the quarter and as of June 30, 2025, resulted in significant increases in the value of these financial liabilities (Note 3) with offsetting losses resulting in a total stockholders’ deficit as of the quarter-end. The warrant and share subscription liability are expected to result in share settlement, with net cash settlement as a remote outcome. As a result, management does not expect these financial liabilities to have a material impact on existing sources of liquidity. As such management believes that existing cash and cash equivalents, marketable securities, and the Standby Equity Purchase Agreement (the “Facility Agreement,” Note 10) will be sufficient to fund operating and capital expenditure requirements through at least 12 months from the date of issuance of these condensed consolidated financial statements.

Significant Risks and Uncertainties

The Company is subject to those risks common in the technology industry and also those risks common to early stage companies, including, but not limited to, the possibility of not being able to successfully develop or market its products, technological obsolescence, competition, dependence on key personnel and key external alliances, the successful protection of its proprietary technologies, compliance with government regulations, and the possibility of not being able to obtain additional financing when needed.

Concentration of Credit Risk

Financial instruments that potentially subject the Company to significant concentrations of credit risk consist primarily of cash, cash equivalents, marketable securities, and trade receivables. The Company maintains the majority of its cash and cash equivalents in accounts with large financial institutions. At times, balances in these accounts may exceed federally insured limits; however, to date, the Company has not incurred any losses on its deposits of cash and cash equivalents and believes the exposure to risk of loss is not material. Risks associated with the Company’s marketable securities is mitigated by investing in investment-grade rated securities when purchased.

The Company’s accounts receivable are derived from customers located in North America, Asia, and Europe. The Company mitigates its credit risks by performing ongoing credit evaluations of its customers’ financial conditions and requires customer advance payments in certain circumstances. The Company generally does not require collateral.

As of June 30, 2025, two customers accounted for 51%, and 25% of accounts receivable, respectively. As of December 31, 2024, five customers accounted for 18%, 16%, 13%, 11% and 10% of accounts receivable, respectively. As of June 30, 2025, two vendors accounted for 15% and 15% of the accounts payable, respectively. As of December 31, 2024, one vendor accounted for 40% of the accounts payable.

Warrants and Share Subscriptions

The Company accounts for warrants and other equity-linked contracts (i.e., share subscriptions) as equity or liability-classified instruments based on an assessment of the instrument’s specific terms and applicable authoritative guidance in FASB ASC 480, Distinguishing Liabilities from Equity (“ASC 480”), and ASC 815-40, Derivatives and Hedging – Contract in Entity’s Own Equity (“ASC 815-40”).

The Company first assesses whether a freestanding equity-linked instrument should be classified as a liability pursuant to ASC 480. Under ASC 480, a freestanding financial instrument is classified as a liability if it is mandatorily redeemable, requires the issuer to settle the instrument or the underlying shares by transferring cash or other assets, or must be settled by issuing a variable number of shares where the monetary value of the obligation is based solely or predominantly on a fixed monetary amount, variations in something other than the fair value of the issuer’s equity shares.

If an equity-linked instrument does not trigger liability classification under ASC 480, the Company assesses whether the instrument meets all requirements for equity classification under ASC 815-40, including whether the instrument is indexed to the Company’s own common stock, among other conditions for equity classification. If not, the instrument is classified as a liability and is further analyzed to determine whether the instrument represents a derivative in its entirety. This assessment requires the use of professional judgment and requires reassessment of an instrument’s classification at each reporting period while the instrument remains outstanding.

Equity-linked instruments that meet all equity classification conditions are recorded as a component of additional paid-in capital at issuance. Equity-linked instruments accounted for as liabilities are recognized and measured at fair value at inception and each reporting period the instrument remains outstanding. Any excess fair value over proceeds to be realized from the equity-linked instruments entered into at arm’s length, along with any changes in fair value, as determined at each reporting period, are recorded as a component of fair value loss on share subscription liability on the consolidated statements of operations and comprehensive loss. Changes in fair value are reported on the consolidated statements of cash flows as a non-cash reconciling item between net loss and net cash flows from operating activities.

Provision for Anticipated Losses on Contracts

When estimated contract costs exceed expected consideration under contracts with a customer, the Company evaluates whether the nature of the contract is in the scope of Accounting Standards Codification (“ASC”) 605-35, Revenue Recognition - Construction-Type and Production-Type Contracts (“ASC 605-35”). If ASC 605-35 applies, the Company recognizes a provision for the entire anticipated losses on contracts as soon as the loss becomes evident. In determining the anticipated losses, the Company considers the principles in ASC 606-10-32-2 through 32-27 (except for the guidance in paragraphs 606-10-32-11 through 32-13 on constraining estimates of variable consideration) to determine the transaction price, adjusted to reflect the effects of the customer's credit risk. The costs used in arriving at the estimated loss on a contract shall include all costs of the type allocable to contracts under paragraphs 340-40-25-5 through 25-8.

The provision for anticipated losses on contracts of $2.3 million is classified as a current liability and $1.5 million is classified as a noncurrent liability on the consolidated balance sheet and as a component of cost of revenue on the condensed consolidated statements of operations and comprehensive loss.

Recent Accounting Pronouncements

In December 2023, the FASB issued ASU 2023-09 “Income Taxes (Topics 740): Improvements to Income Tax Disclosures” to expand the disclosure requirements for income taxes, specifically related to the rate reconciliation and income taxes paid. Upon adoption, the Company will be

required to disclose additional specified categories in the rate reconciliation in both percentage and dollar amounts. The Company will also be required to disclose the amount of income taxes paid disaggregated by jurisdiction, among other disclosure requirements. The standard is effective for annual periods beginning January 1, 2025, and the Company is currently assessing the effect that the updated standard will have on the condensed consolidated financial statements and related disclosures.

In November 2024, the FASB issued ASU 2024-03 “Income Statement: Reporting Comprehensive Income-Expense Disaggregation Disclosures (Subtopic 220-40)” to improve the disclosures about an entity’s expenses. Upon adoption, the Company will be required to disclose in the notes to the financial statements a disaggregation of certain expense categories included within the expense captions on the face of the income statement. The standard is effective for the Company's 2027 annual period, and interim periods beginning in 2028, with early adoption permitted. The standard can be applied either prospectively or retrospectively. The Company is currently evaluating the potential effect that the updated standard will have on the condensed consolidated financial statements and related disclosures.