UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-K

(Mark One)

For the fiscal year ended: October 31, 2011

OR

For the transition period from             to             

Commission File Number of issuing entity: 333-163025-01

Commission File Number of depositor: 333-163025

Chrysler Financial Auto

Securitization Trust 2010-A

(Exact name of issuing entity as specified in its charter)

TD Auto Finance LLC

(Exact name of depositor and sponsor as specified in its charter)

(302) 622-8163

(Telephone number, including area code, of issuing entity)

Securities registered pursuant to Section 12(b) of the Act: None

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    ¨  Yes    x  No

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    ¨  Yes    x   No

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    x  Yes    ¨  No

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    ¨  Yes    x  No (The registrant is not required to submit such files)

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of the registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this form 10-K or any amendment to this Form 10-K.  x

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or-non-accelerated filer. See definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check One):

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).    ¨  Yes    x  No

State the aggregate market value of the voting and non-voting common equity held by nonaffiliates computed by reference to the price at which the common equity was last sold, or the average bid and asked prices of such common equity, as of the last business day of the registrant’s most recently completed second fiscal quarter. Not applicable.

PART I

The following Items have been omitted in accordance with General Instruction J(1) to Form 10-K:

Nothing to report.

PART II

The following Items have been omitted in accordance with General Instruction J(1) to Form 10-K:

Nothing to report.

PART III

The following Items have been omitted in accordance with General Instruction J(1) to Form 10-K:

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PURSUANT TO GENERAL INSTRUCTION J(2) THE FOLLOWING SUBSTITUTE INFORMATION IS BEING PROVIDED IN THIS REPORT ON FORM 10-K:

Item 1112(b) of Regulation AB. Significant Obligors of Pool Assets – Financial Information.

Nothing to report.

Item 1114(b)(2) of Regulation AB. Credit Enhancement and Other Support, except for Certain Derivatives Instruments – Financial Information Regarding Significant Enhancement Providers.

Nothing to report.

Item 1115(b) of Regulation AB. Certain Derivatives Instruments – Financial Information.

Nothing to report.

Item 1117 of Regulation AB. Legal Proceedings.

Nothing to report.

Item 1119 of Regulation AB. Affiliations and Certain Relationships and Related Transactions.

Information required by Item 1119 of Regulation AB has been omitted from this report on Form 10-K in reliance on the Instruction to Item 1119.

Item 1122 of Regulation AB. Compliance with Applicable Servicing Criteria.

Each of TD Auto Finance LLC (“TDAF”) and Wells Fargo Bank, National Association (“Wells Fargo,” together with TDAF, each, a “Servicing Participant”) has been identified by the registrant as a party participating in the servicing function during the reporting period with respect to the pool assets held by the issuing entity. Each Servicing Participant has completed a report on an assessment of compliance with the servicing criteria applicable to such Servicing Participant (each, a “Report on Assessment”) as of December 31, 2011 and for the reporting period, which Reports on Assessment are attached as Exhibits 33.1 and 34.1 to this report on Form 10-K. In addition, each Servicing Participant has provided an attestation report (each, an “Attestation Report”) by a registered independent public accounting firm on its Report on Assessment. The Attestation Reports are attached as Exhibits 33.2 and 34.2 to this report on Form 10-K.

Neither the Report on Assessment nor the Attestation Report for TDAF has identified any material instances of noncompliance with the servicing criteria described in such Report on Assessment as being applicable to TDAF.

The Report on Assessment and the Attestation Report for Wells Fargo has identified several material instances of noncompliance with the servicing criteria described in such Report on Assessment as being applicable to Wells Fargo. Those material instances of noncompliance are as follows:

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To the knowledge of the issuing entity, none of those material instances of noncompliance relate to any asset-backed securities issued by the issuing entity.

Item 1123 of Regulation AB. Servicing Compliance Statement.

The information required by this item is attached as Exhibit 35.1.

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PART IV

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SUPPLEMENTAL INFORMATION TO BE FURNISHED

WITH REPORTS FILED PURSUANT TO SECTION 15(d) OF

THE ACT BY REGISTRANTS WHICH HAVE NOT REGISTERED

SECURITIES PURSUANT TO SECTION 12 OF THE ACT.

No annual report to security holders, proxy statement, form of proxy or other proxy soliciting material has been sent to any security holders or is anticipated to be furnished to security holders subsequent to the filing of this annual report on Form 10-K.

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SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Dated: March 23, 2012

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EXHIBIT INDEX

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