UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-D

ASSET-BACKED ISSUER

DISTRIBUTION REPORT PURSUANT TO SECTION 13 OR 15 (d) OF

THE SECURITIES EXCHANGE ACT OF 1934

For the monthly distribution period from

September 1, 2015 to September 30, 2015

Commission File Number of issuing entity: 333-181915-03

Ally Auto Receivables Trust 2013-SN1

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

Commission File Number of depositor: 333-181915-01

Ally Auto Assets LLC

(Exact name of depositor as specified in its charter)

Ally Bank

(Exact name of sponsor as specified in its charter)



DELAWARE		37-6547356
(State or other jurisdiction of incorporation or organization of the		(I.R.S. Employer Identification No.)
issuing entity)



Ally Auto Assets LLC		48265
200 Renaissance Center, Detroit, Michigan		(Zip Code)
(Address of principal executive offices of the issuing entity)

(866) 710-4623

(Telephone number, including area code)

Registered / reporting pursuant to (Check One)



Title of Class	Section 12(b)	Section 12(g)	Section 15(d)	Name of Exchange
				(If Section 12(b))

Class A-1			X
Class A-2			X
Class A-3			X
Class A-4			X

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. Yes ý No o

PART I — DISTRIBUTION INFORMATION

Item 1. Distribution and Pool Performance Information

Distribution and pool performance information of the asset pool of the issuing entity is set forth in the attached monthly Statement to Securityholder.

Item 1121(c) of Regulation AB. Repurchases and Replacements

No activity to report for the Period from September 1, 2015 to September 30, 2015 as required by Item 1121(c) of Regulation AB.

Date of most recent Form ABS-15G: February 12, 2015

Central Index Key (CIK) of Securitizer: 0001477336

PART II — OTHER INFORMATION

Item 2. Legal Proceedings

Citibank, N.A. (“Citibank”) is acting as Trustee of this ABS transaction. In the ordinary course of business, Citibank is involved in a number of legal proceedings, including in connection with its role as trustee of certain RMBS transactions. Certain of these Citibank as trustee-related matters are disclosed herein.

On June 18, 2014, a civil action was filed against Citibank in the Supreme Court of the State of New York by a group of investors in 48 private-label RMBS trusts for which Citibank allegedly serves or did serve as trustee, asserting claims for purported violations of the Trust Indenture Act of 1939, breach of contract, breach of fiduciary duty and negligence based on Citibank’s alleged failure to perform its duties as trustee for the 48 RMBS trusts. On November 24, 2014, plaintiffs sought leave to withdraw this action. On the same day, a smaller subset of similar plaintiff investors in 27 private-label RMBS trusts for which Citibank allegedly serves or did serve as trustee, filed a new civil action against Citibank in the United States District Court for the Southern District of New York asserting similar claims as the prior action filed in state court. In January 2015, the court closed plaintiffs’ original state court action. Citibank’s motion to dismiss the federal complaint was fully briefed as of May 13, 2015. On September 8, 2015, the federal court dismissed all claims as to 24 of the 27 trusts and allowed certain of the claims to proceed as to the other three trusts.

On August 19, 2015, the Federal Deposit Insurance Corporation (FDIC) as Receiver for a financial institution filed a civil action against Citibank in the Southern District of New York. This action relates to one private-label RMBS trust for which Citibank formerly served as trustee. FDIC asserts claims for breach of contract, violation of the Streit Act, and violation of the Trust Indenture Act.

There can be no assurances as to the outcome of litigation or the possible impact of litigation on the trustee or the RMBS trusts. However, Citibank denies liability and continues to vigorously defend against these litigations. Furthermore, neither the above-disclosed litigations nor any other pending legal proceeding involving Citibank will materially affect Citibank’s ability to perform its duties as Trustee under the Indenture for this ABS transaction.

Item 3. Sales of Securities and Use of Proceeds

None.

Item 4. Defaults Upon Senior Securities

None.

Item 5. Submission of Matters to a Vote of Security Holders

None.

Item 6. Significant Obligors of Pool Assets

None.

Item 7. Significant Enhancement Provider Information

None.

Item 8. Other Information

None.

Item 9. Exhibits



EXHIBIT NO.		DESCRIPTION

99		Monthly Statement to Securityholder for the Period from September 1, 2015 to September 30, 2015

Signature

Pursuant to the requirements 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.



	Ally Auto Receivables Trust 2013-SN1
	(Issuing Entity)

	by: Ally Financial Inc.
	(Servicer, not in its individual capacity but
	solely as Servicer on behalf of the Issuing Entity)



	/s/ David J DeBrunner
	David J DeBrunner,
	Vice President, Controller
	and Chief Accounting Officer

Date: October 22, 2015

EXHIBIT INDEX



EXHIBIT NUMBER		DESCRIPTION

99		Monthly Statement to Securityholder for the Period from September 1, 2015 to September 30, 2015

Ally Auto Receivables Trust 2013-SN1 10-D