10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

þ ANNUAL REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIESEXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2018

OR

¨ TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIESEXCHANGE ACT OF 1934

For the transition period from ___________ to ____________.

Ally Auto Receivables Trust 2017-4

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

Commission file number of issuing entity: 333-204844-07

Central Index Key Number of issuing entity: 0001713736

Ally Auto Assets LLC

(Exact name of depositor as specified in its charter)

Commission file number of depositor: 333-204844

Central Index Key Number of depositor: 0001477336

Ally Bank

(Exact name of sponsor as specified in its charter)

Central Index Key Number of sponsor (if applicable): 0001601846

DELAWARE	61-6587319
(State or other jurisdiction of	(I.R.S. Employer
incorporation or organization)	Identification No.)

Ally Auto Assets LLC

500 Woodward Avenue

Detroit, Michigan

48226

(Address of principal executive offices)

(Zip Code)

(866) 710-4623

(Registrant’s telephone number, including area code)

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 ¨ No þ

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

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. þ Yes ¨ No

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). þ Yes ¨ No

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§ 229.405 of this chapter) is not contained herein, and will not be contained, to the best of 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. þ Not applicable to this registrant.

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of  "large accelerated filer,"  "accelerated filer," "non-accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

¨  Large accelerated filer	¨  Accelerated filer
	¨  Smaller reporting company
þ  Non-accelerated filer	¨  Emerging growth company

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

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

State the aggregate market value of the voting and non-voting common equity held by non-affiliates computed by reference to the price at which the common equity was last sold, or the average bid and asked price of such common equity, as of the last business day of the registrant’s most recently completed second fiscal quarter. None

Registrant does not have any voting or non-voting common equity held by non-affiliates.

Documents incorporated by reference. None

INDEX

Ally Auto Receivables Trust 2017-4

Part I
Item 1.	Business*
Item 1A.	Risk Factors*
Item 1B.	Unresolved Staff Comments
Item 2.	Properties*
Item 3.	Legal Proceedings*
Item 4.	Mine Safety Disclosures
Part II
Item 5.	Market For Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities*
Item 6.	Selected Financial Data*
Item 7.	Management’s Discussion and Analysis of Financial Condition and Results of Operations*
Item 7A.	Quantitative and Qualitative Disclosures About Market Risk*
Item 8.	Financial Statements and Supplementary Data*
Item 9.	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure*
Item 9A.	Controls and Procedure*
Item 9B.	Other Information
Part III
Item 10.	Directors, Executive Officers and Corporate Governance*
Item 11.	Executive Compensation*
Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters*
Item 13.	Certain Relationships and Related Transactions and Director Independence*
Item 14.	Principal Accounting Fees and Services*
Part IV
Item 15.	Exhibits, Financial Statement Schedules
Item 16.	Form 10-K Summary

* Item is omitted in accordance with General Instructions J to Form 10-K.

2

Part I

Item 1B. Unresolved Staff Comments

None.

Item 4. Mine Safety Disclosures

Not applicable.

Substitute information provided in accordance with General Instruction J toForm 10-K:

Item 1112(b) of Regulation AB. Significant Obligors of Pool Assets (FinancialInformation).

There are no significant obligors with respect to the pool assets held by Ally Auto Receivables Trust 2017-4 (the “Issuing Entity”).

Item 1114(b)(2) of Regulation AB. Credit Enhancement and Other Support, Exceptfor Certain Derivatives Instruments (Financial Information).

No entity or group of affiliated entities provides any external credit enhancement or other support with respect to either payment of the pool assets held by the Issuing Entity or payments on the notes (the “Notes”) or certificates (the “Certificates”) issued by the Issuing Entity.

Item 1115(b) of Regulation AB. Certain Derivatives Instruments (FinancialInformation).

No entity or group of affiliated entities provides any derivative instruments that are used to alter the payment characteristics of the cashflows from the Issuing Entity.

Item 1117 of Regulation AB. Legal Proceedings.

There are no current legal proceedings pending, or to the best knowledge of management of such entity, threatened, against the Issuing Entity, the sponsor, the servicer or the depositor that, if determined adversely to such party, would be expected to have a material adverse effect on the performance of the notes.

The owner trustee has represented to the Issuing Entity that it is not a party to any current legal proceedings, nor is its management aware of any legal proceedings threatened against it that, if determined adversely to such party, would be expected to have a material adverse effect on the performance of the notes.

Part II

Item 9B. Other Information

None.

Part III

Substitute information provided in accordance with General Instruction J toForm 10-K:

Item 1119 of Regulation AB. Affiliations and Certain Relationships and RelatedTransactions.

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.  The information has been provided previously in a Prospectus, dated August 15, 2017, filed by the Issuing Entity, pursuant to Rule 424(b)(5) of the Securities Act of 1933 on August 17, 2017.

3

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

Each of Ally Bank and Deutsche Bank Trust Company Americas (each, a “Servicing Participant”) has been identified by the registrant as a party participating in the servicing function with respect to the pool assets held by the Issuing Entity during the reporting period. Each of the Servicing Participants has completed a report on an assessment of compliance with the servicing criteria applicable to such Servicing Participant (each, a “Report on Assessment”) during the Issuing Entity’s year ended December 31, 2018, which Reports on Assessment are attached as exhibits to this Form 10-K. In addition, each of the Servicing Participants has provided an attestation report (each, an “Attestation Report”) by a registered independent public accounting firm regarding its related Report on Assessment. Each Attestation Report is attached as an exhibit to this Form 10-K.

None of the Reports on Assessment or the related Attestation Reports has identified any material instances of noncompliance with the servicing criteria described in the related Report on Assessment as being applicable to each such Servicing Participant.

Item 1123 of Regulation AB. Servicer Compliance Statement.

Ally Bank has been identified as the servicer during the reporting period with respect to the pool assets held by the Issuing Entity. Ally Bank has provided a statement of compliance with the applicable servicing activities (the “Compliance Statement”), signed by an authorized officer, and such Compliance Statement is attached as an exhibit to this Form 10-K.

4

Part IV

Item 15. Exhibits, Financial Statement Schedules

(a) List the following documents filed as a part of the report:

(1) Financial Statements — Not Applicable.

(2) Financial Statement Schedules — Not Applicable.

(3) Exhibits

• Second Amended and Restated Limited Liability Company Agreement of Ally Auto Assets LLC, dated as of November 7, 2018.

• Indenture between Ally Auto Receivables Trust 2017-4 (the "Issuing Entity”) and Deutsche Bank Trust Company Americas, as Indenture Trustee (the “Indenture Trustee”), dated as of August 23, 2017.

• Trust Agreement between Ally Auto Assets LLC, as Depositor, and BNY Mellon Trust of Delaware, as Owner Trustee, dated as of August 23, 2017.

• Pooling Agreement between Ally Bank, as Seller, and Ally Auto Assets LLC, dated as of August 23, 2017.

• Rule 13a-14(d)/15d-14(d) Certification (Section 302 Certification).

• Report on Assessment of Compliance with SEC Regulation AB Servicing Criteria concerning activities of Ally Bank for the year ended December 31, 2018.

• Report on Assessment of Compliance with SEC Regulation AB Servicing Criteria concerning activities of Deutsche Bank Trust Company Americas for the year ended December 31, 2018.

• Registered Public Accounting Firm Attestation Report on Assessment of Compliance with applicable Servicing Criteria of Ally Bank dated March 12, 2019 for the year ended December 31, 2018.

• Registered Public Accounting Firm Attestation Report on Assessment of Compliance with applicable Servicing Criteria of Deutsche Bank Trust Company Americas dated February 28, 2019 for the year ended December 31, 2018.

• Servicer Compliance Statement of Ally Bank for the year ended December 31, 2018.

• Trust Sale Agreement between Ally Auto Assets LLC, as Depositor, and the Issuing Entity, dated as of August 23, 2017.

• Custodian Agreement between Ally Bank, as Custodian, and Ally Auto Assets LLC, as Depositor, dated as of August 23, 2017.

• Administration Agreement among the Issuing Entity, Ally Bank, as Administrator, and the Indenture Trustee, dated as of August 23, 2017.

• Servicing Agreement among the Issuing Entity, Ally Bank, as Servicer, and Ally Auto Assets LLC, dated as of August 23, 2017.

• Asset Representations Review Agreement among the Issuing Entity, Ally Bank, as Sponsor, and Clayton Fixed Income Services LLC, as Asset Representations Reviewer, dated as of August 23, 2017.

Item 16. Form 10-K Summary

None.

5

Signature

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.

Ally Auto Assets LLC, as Depositor

/s/ Ryan C. Farris

Ryan C. Farris

President

(Senior Officer in charge of securitization of the depositor)

Date: March 25, 2019

6

Index of Exhibits

Exhibit	Description	Method of Filing
3.1	Second Amended and Restated Limited Liability Company Agreement of Ally Auto Assets LLC, dated as of November 7, 2018.	**
4.1	Indenture between Ally Auto Receivables Trust 2017-4 (the “Issuing Entity”) and Deutsche Bank Trust Company Americas, as Indenture Trustee (the “Indenture Trustee”), dated as of August 23, 2017.	*
4.2	Trust Agreement between Ally Auto Assets LLC, as Depositor, and BNY Mellon Trust of Delaware, as Owner Trustee, dated as of August 23, 2017.	*
4.3	Pooling Agreement between Ally Bank, as Seller, and Ally Auto Assets LLC, dated as of August 23, 2017.	*
31.1	Certification of Executive Officer Pursuant to Rule 13a-14(d)/15d-14(d).	Filed herewith.
33.1	Report on Assessment of Compliance with SEC Regulation AB Servicing Criteria concerning activities of Ally Bank for the year ended December 31, 2018.	Filed herewith.
33.2	Report on Assessment of Compliance with SEC Regulation AB Servicing Criteria concerning activities of Deutsche Bank Trust Company Americas for the year ended December 31, 2018.	Filed herewith.
34.1	Registered Public Accounting Firm Attestation Report on Assessment of Compliance with applicable Servicing Criteria of Ally Bank dated March 12, 2019 for the year ended December 31, 2018.	Filed herewith.
34.2	Registered Public Accounting Firm Attestation Report on Assessment of Compliance with applicable Servicing Criteria of Deutsche Bank Trust Company Americas, dated February 28, 2019 for the year ended December 31, 2018.	Filed herewith.
35.1	Servicer Compliance Statement of Ally Bank for the year ended December 31, 2018.	Filed herewith.
99.1	Trust Sale Agreement between Ally Auto Assets LLC, as Depositor, and the Issuing Entity, dated as of August 23, 2017.	*
99.2	Custodian Agreement between Ally Bank, as Custodian, and Ally Auto Assets LLC, as Depositor, dated as of August 23, 2017.	*
99.3	Administration Agreement among the Issuing Entity, Ally Bank, as Administrator, and the Indenture Trustee, dated as of August 23, 2017.	*
99.4	Servicing Agreement among Ally Bank, as Servicer, Ally Auto Assets LLC, and the Issuing Entity, dated as of August 23, 2017.	*
99.5	Asset Representations Review Agreement among the Issuing Entity, Ally Bank, as Sponsor, and Clayton Fixed Income Services LLC, as Asset Representations Reviewer, dated as of August 23, 2017.	*

* Incorporated by reference to the corresponding Exhibit to the Issuing Entity’s Current Report on Form 8-K filed on August 23, 2017 (File No. 333-204844-07).

** Incorporated by reference to Exhibit 3.1 of Ally Auto Assets LLC's Form SF-3 Registration Statement filed on November 8, 2018 (File No. 333-228265).

7

EX-31.1

Exhibit 31.1

Certifications

I, Ryan C. Farris, certify that:

1 I have reviewed this report on Form 10-K and all reports on Form 10-D required to be filed in respect of the period covered by this report on Form 10-K of Ally Auto Receivables Trust 2017-4 (the “Exchange Act periodic reports”);

2 Based on my knowledge, the Exchange Act periodic reports, taken as a whole, do not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3 Based on my knowledge, all of the distribution, servicing and other information required to be provided under Form 10-D for the period covered by this report is included in the Exchange Act periodic reports;

4 Based on my knowledge and the servicer compliance statement required in this report under Item 1123 of Regulation AB, and except as disclosed in the Exchange Act periodic reports, the servicer has fulfilled its obligations under the servicing agreement in all material respects; and

5 All of the reports on assessment of compliance with servicing criteria for asset-backed securities and their related attestation reports on assessment of compliance with servicing criteria for asset-backed securities required to be included in this report in accordance with Item 1122 of Regulation AB and Exchange Act Rules 13a-18 and 15d-18 have been included as an exhibit to this report, except as otherwise disclosed in this report. Any material instances of noncompliance described in such reports have been disclosed in this report on Form 10-K.

In giving the certifications above, I have reasonably relied on the information provided to me by the following unaffiliated party: Deutsche Bank Trust Company Americas and BNY Mellon Trust of Delaware.

Date: March 25, 2019

/s/ Ryan C. Farris

Ryan C. Farris

President, Ally Auto Assets LLC, as Depositor

(Senior Officer in charge of securitization of the depositor)

EX-33.1

Exhibit 33.1

Certification Regarding Compliance with SEC Regulation AB Servicing Criteria

1 Ally Financial Inc., including its wholly owned subsidiary Ally Bank (collectively, "Ally") is responsible for assessing compliance with the servicing criteria applicable to it under paragraph (d) of Item 1122 of Regulation AB, as of and for the year ended December 31, 2018 (the "Reporting Period"), as set forth in Appendix A hereto. The transactions covered by this report include retail and lease transactions (including asset-backed securities transactions) for which Ally acts as servicer, involving the Consumer Automotive Receivables Platform (the "Platform"). The Platform consists of the activities involved in the performance of servicing functions for all publicly and privately issued retail and lease transactions (including asset-backed transactions);

2 Ally has engaged certain vendors (the "Vendors") to perform specific, limited or scripted activities, and Ally elects to take responsibility for assessing compliance with the servicing criteria or portion of the servicing criteria applicable to such Vendors' activities as set forth in Appendix A hereto;

3 Except as set forth in paragraph 4 below, Ally used the criteria set forth in paragraph (d) of Item 1122 of Regulation AB to assess the compliance with the applicable servicing criteria;

4 The criteria listed in the column titled "Inapplicable Servicing Criteria" on Appendix A hereto are inapplicable to Ally based on the activities it performs, directly or through its Vendors, with respect to the Platform;

5 Ally has complied, in all material respects, with the applicable servicing criteria as of December 31, 2018 and for the Reporting Period with respect to the Platform taken as a whole;

6 Ally has not identified and is not aware of any material instance of noncompliance by the Vendors with the applicable servicing criteria as of December 31, 2018 and for the Reporting Period with respect to the Platform taken as a whole;

7 Ally has not identified any material deficiency in its policies and procedures to monitor the compliance by the Vendors with the applicable servicing criteria as of December 31, 2018 and for the Reporting Period with respect to the Platform taken as a whole; and

8 Deloitte & Touche LLP, an independent registered public accounting firm, has issued an attestation report on Ally's assessment of compliance with the applicable servicing criteria for the Reporting Period.

March 12, 2019

Ally Financial Inc.
By:	/s/ David J. DeBrunner
	Name: David J. DeBrunner
	Title: Vice President, Controller and Chief
	Accounting Officer
By:	/s/ Matthew Y. L. Loucks
	Name: Matthew Y. L. Loucks
	Title: Assistant Treasurer, Senior Director
Ally Bank
By:	/s/ David J. DeBrunner
	Name: David J. DeBrunner
	Title: Controller and Chief Accounting Officer

APPENDIX A

Servicing Criteria		Applicable Servicing Criteria		INAPPLICABLE Servicing Criteria
Reference	Criteria	Performed Directly by Ally	Performed by Vendor(s) for which Ally is the Responsible Party
General Servicing Considerations
1122(d)(1)(i)	Policies and procedures are instituted to monitor any performance or other triggers and events of default in accordance with the transaction agreements.	XX
1122(d)(1)(ii)	If any material servicing activities are outsourced to third parties, policies and procedures are instituted to monitor the third party’s performance and compliance with such servicing activities.	XX
1122(d)(1)(iii)	Any requirements in the transaction agreements to maintain a back-up servicer for the pool assets are maintained.			XX
1122(d)(1)(iv)	A fidelity bond and errors and omissions policy is in effect on the party participating in the servicing function throughout the reporting period in the amount of coverage required by and otherwise in accordance with the terms of the transaction agreements.			XX
1122(d)(1)(v)	Aggregation of information, as applicable, is mathematically accurate and the information conveyed accurately reflects the information.	XX
Cash Collection and Administration
1122(d)(2)(i)	Payments on pool assets are deposited into the appropriate custodial bank accounts and related bank clearing accounts no more than two business days following receipt, or such other number of days specified in the transaction agreements.	XX
1122(d)(2)(ii)	Disbursements made via wire transfer on behalf of an obligor or to an investor are made only by authorized personnel.	XX
1122(d)(2)(iii)	Advances of funds or guarantees regarding collections, cash flows or distributions, and any interest or other fees charged for such advances, are made, reviewed and approved as specified in the transaction agreements.	XX
1122(d)(2)(iv)	The related accounts for the transaction, such as cash reserve accounts or accounts established as a form of overcollateralization, are separately maintained (e.g., with respect to commingling of cash) as set forth in the transaction agreements.	XX
1122(d)(2)(v)	Each custodial account is maintained at a federally insured depository institution as set forth in the transaction agreements. For purposes of this criterion, “federally insured depository institution” with respect to a foreign financial institution means a foreign financial institution that meets the requirements of Rule 240.13k-1(b)(1) of the Securities Exchange Act.	XX
1122(d)(2)(vi)	Unissued checks are safeguarded so as to prevent unauthorized access.			XX
1122(d)(2)(vii)	Reconciliations are prepared on a monthly basis for all asset-backed securities related bank accounts, including custodial accounts and related bank clearing accounts. These reconciliations are (A) mathematically accurate; (B) prepared within 30 calendar days after the bank statement cutoff date, or such other number of days specified in the transaction agreements; (C) reviewed and approved by someone other than the person who prepared the reconciliation; and (D) contain explanations for reconciling items. These reconciling items are resolved within 90 calendar days of their original identification, or such other number of days specified in the transaction agreements.	XX
Investor Remittances and Reporting
1122(d)(3)(i)	Reports to investors, including those to be filed with the Commission, are maintained in accordance with the transaction agreements and applicable Commission requirements. Specifically, such reports (A) are prepared in accordance with timeframes and other terms set forth in the transaction agreements; (B) provide information calculated in accordance with the terms specified in the transaction agreements; (C) are filed with the Commission as required by its rules and regulations; (D) agree with investors’ or the trustee’s records as to the total unpaid principal balance and number of pool assets serviced by the Servicer.	XX

1122(d)(3)(ii)	Amounts due to investors are allocated and remitted in accordance with timeframes, distribution priority and other terms set forth in the transaction agreements.	XX
1122(d)(3)(iii)	Disbursements made to an investor are posted within two business days to the Servicer’s investor records, or such other number of days specified in the transaction agreements.	XX
1122(d)(3)(iv)	Amounts remitted to investors per the investor reports agree with cancelled checks, or other form of payment, or custodial bank statements.	XX
Pool Asset Administration
1122(d)(4)(i)	Collateral or security on pool assets is maintained as required by the transaction agreements or related pool assets documents.	XX	XX
1122(d)(4)(ii)	Pool assets and related documents are safeguarded as required by the transaction agreements	XX	XX
1122(d)(4)(iii)	Any additions, removals or substitutions to the asset pool are made, reviewed and approved in accordance with any conditions or requirements in the transaction agreements.	XX
1122(d)(4)(iv)	Payments on pool assets, including any payoffs, made in accordance with the related pool asset documents are posted to the Servicer’s obligor records maintained no more than two business days after receipt, or such other number of days specified in the transaction agreements, and allocated to principal, interest or other items (e.g., escrow) in accordance with the related [pool asset] documents.	XX	XX
1122(d)(4)(v)	The Servicer’s records regarding the pool assets agree with the Servicer’s records with respect to an obligor’s unpaid principal balance.	XX
1122(d)(4)(vi)	Changes with respect to the terms or status of an obligor's pool assets (e.g., loan modifications or re-agings) are made, reviewed and approved by authorized personnel in accordance with the transaction agreements and related pool asset documents.	XX	XX
1122(d)(4)(vii)	Loss mitigation or recovery actions (e.g., forbearance plans, modifications and deeds in lieu of foreclosure, foreclosures and repossessions, as applicable) are initiated, conducted and concluded in accordance with the timeframes or other requirements established by the transaction agreements.	XX	XX
1122(d)(4)(viii)	Records documenting collection efforts are maintained during the period a pool asset is delinquent in accordance with the transaction agreements. Such records are maintained on at least a monthly basis, or such other period specified in the transaction agreements, and describe the entity’s activities in monitoring delinquent pool assets including, for example, phone calls, letters and payment rescheduling plans in cases where delinquency is deemed temporary (e.g., illness or unemployment).	XX	XX
1122(d)(4)(ix)	Adjustments to interest rates or rates of return for pool assets with variable rates are computed based on the related pool asset documents.			XX
1122(d)(4)(x)	Regarding any funds held in trust for an obligor (such as escrow accounts): (A) such funds are analyzed, in accordance with the obligor’s pool asset documents, on at least an annual basis, or such other period specified in the transaction agreements; (B) interest on such funds is paid, or credited, to obligors in accordance with applicable pool asset documents and state laws; and (C) such funds are returned to the obligor within 30 calendar days of full repayment of the related pool assets, or such other number of days specified in the transaction agreements.			XX
1122(d)(4)(xi)	Payments made on behalf of an obligor (such as tax or insurance payments) are made on or before the related penalty or expiration dates, as indicated on the appropriate bills or notices for such payments, provided that such support has been received by the Servicer at least 30 calendar days prior to these dates, or such other number of days specified in the transaction agreements.			XX
1122(d)(4)(xii)	Any late payment penalties in connection with any payment to be made on behalf of an obligor are paid from the Servicer’s funds and not charged to the obligor, unless the late payment was due to the obligor’s error or omission.			XX
1122(d)(4)(xiii)	Disbursements made on behalf of an obligor are posted within two business days to the obligor’s records maintained by the Servicer, or such other number of days specified in the transaction agreements.			XX
1122(d)(4)(xiv)	Delinquencies, charge-offs and uncollectible accounts are recognized and recorded in accordance with the transaction agreements.	XX
1122(d)(4)(xv)	Any external enhancement or other support, identified in Item 1114(a)(1) through (3) or Item 1115 of Regulation AB, is maintained as set forth in the transaction agreements.	XX

EX-33.2

Exhibit 33.2

MANAGEMENT’S ASSERTION OF COMPLIANCE

Management of the Trust & Agency Services department of Deutsche Bank National Trust Company and Deutsche Bank Trust Company Americas (collectively the “Company”) is responsible for assessing the servicing criteria set forth in Item 1122(d) of Regulation AB promulgated by the Securities and Exchange Commission to determine which criteria are applicable to the Company in respect of the servicing platform described below. Management has determined that the servicing criteria are applicable in regard to the servicing platform as of and for the period as follows:

Platform: Publicly-issued (i.e., transaction-level reporting required under the Securities Exchange Act of 1934, as amended) and certain privately-issued (i.e., for which transaction-level reporting is required pursuant to contractual obligation) residential mortgage-backed securities, commercial mortgage-backed securities and other asset-backed securities issued on or after January 1, 2006, for which the Company provides trustee, certificate administrator, securities administration, paying agent or custodian services, as defined in the transaction agreements, excluding publicly-issued securities sponsored or issued by any government sponsored entity (the “Platform”).

Applicable Servicing Criteria: All servicing criteria set forth in Item 1122(d), to the extent required by Item 1122(d) servicing criteria in regards to the activities performed by the Company with respect to the Platform as to any transaction, except for the following criteria: 1122(d)(4)(iv) - 1122(d)(4)(xiv), which management has determined are not applicable to the activities the Company performs with respect to the Platform (the “Applicable Servicing Criteria”). With respect to Applicable Servicing Criteria 1122(d)(1)(ii), 1122(d)(1)(iii), 1122(d)(2)(iii) and 1122(d)(4)(iii) there were no activities performed during the year ended December 31, 2018 with respect to the Platform, because there were no occurrences of events that would require the Company to perform such activities.

Period: Year ended December 31, 2018 (the “Period”).

Management's interpretation of Applicable Servicing Criteria: The Company’s management has determined that servicing criterion 1122(d)(1)(iii) is applicable only with respect to its continuing obligation to act as, or locate a, successor servicer under the circumstances referred to in certain transaction agreements. It is management's interpretation that the Company has no other active back-up servicing responsibilities in regards to servicing criterion 1122(d)(1)(iii) as of and for the Period. The Company’s management has determined that servicing criterion 1122(d)(1)(v) is applicable only to the activities the Company performs related to the mathematically accurate aggregation of information received from servicers and the accurate conveyance of such information within reports to investors. The Company’s management has determined that servicing criterion 1122(d)(4)(iii) is applicable to the activities the Company performs with respect to the Platform only as it relates to the Company’s obligation to report additions, removals or substitutions on reports to investors in accordance with the transaction agreements.

With respect to the Platform as of and for the Period, the Company’s management provides the following assertion of compliance with respect to the Applicable Servicing Criteria:

• The Company’s management is responsible for assessing the Company’s compliance with the Applicable Servicing Criteria.

• The Company’s management has assessed compliance with the Applicable Servicing Criteria. In making this assessment, management used the criteria set forth by the Securities and Exchange Commission in paragraph (d) of Item 1122 of Regulation AB.

• Based on such assessment, the Company has complied, in all material respects with the Applicable Servicing Criteria.

KPMG LLP, an independent registered public accounting firm, has issued an attestation report with respect to management’s assertion of compliance with the Applicable Servicing Criteria as of and for the Period.

DEUTSCHE BANK NATIONAL TRUST COMPANY

By:     /s/ David Co

Name: David Co

Its: Director

By:    /s/ Matt Bowen

Name: Matt Bowen

Its: Managing Director

By:     /s/ Kevin Fischer

Name: Kevin Fischer

Its: Director

DEUTSCHE BANK TRUST COMPANY AMERICAS

By:    /s/ David Co

Name: David Co

Its: Director

By:     /s/ Jenna Kaufman

Name: Jenna Kaufman

Its: Director

Dated: February 28, 2019

EX-34.1

Exhibit 34.1

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Board of Directors

Ally Financial Inc.

We have examined management’s assertion, included in the accompanying Certification Regarding Compliance with SEC Regulation AB Servicing Criteria, that Ally Financial Inc., including its wholly owned subsidiary Ally Bank (collectively, the “Company”) complied with the servicing criteria set forth in Item 1122(d) of the Securities and Exchange Commission’s Regulation AB for the Consumer Automotive Receivables Platform (the “Consumer Platform”), excluding criteria 1122(d)(1)(iii), 1122(d)(1)(iv), 1122(d)(2)(vi), 1122(d)(4)(ix), 1122(d)(4)(x), 1122(d)(4)(xi), 1122(d)(4)(xii), and 1122(d)(4)(xiii) (the "servicing criteria"), as of and for the year ended December 31, 2018, which management has determined are not applicable to the activities performed by the Company with respect to the Consumer Platform. The Consumer Platform consists of the activities involved in the performance of servicing functions for all publicly and privately issued retail and lease transactions (including asset-backed transactions). Management is responsible for the Company’s compliance with the servicing criteria and its assertion. Our responsibility is to express an opinion on management’s assertion about the Company’s compliance with the servicing criteria based on our examination.

Our examination was conducted in accordance with the standards of the Public Company Accounting Oversight Board (United States) and in accordance with attestation standards established by the American Institute of Certified Public Accountants. Those standards require that we plan and perform the examination to obtain reasonable assurance about whether management's assertion about compliance with the servicing criteria is fairly stated, in all material respects, and, accordingly, included examining, on a test basis, evidence about the Company’s compliance with the servicing criteria, including tests on a sample basis of the servicing activities related to the Consumer Platform, determining whether the Company performed those selected activities in compliance with the servicing criteria during the specified period, and performing such other procedures as we considered necessary in the circumstances. Our procedures were limited to selected servicing activities performed by the Company during the period covered by this report and, accordingly, such samples may not have included servicing activities related to each transaction included in the Consumer Platform. Further, an examination is not designed to detect noncompliance arising from errors that may have occurred prior to the period specified above that may have affected the balances or amounts calculated or reported by the Company during the period covered by this report. We believe that the evidence we obtained in our examination is sufficient and appropriate to provide a reasonable basis for our opinion.

As described in management’s assertion, for servicing criteria 1122(d)(4)(i), 1122(d)(4)(ii), 1122(d)(4)(iv), 1122(d)(4)(vi), 1122(d)(4)(vii), and 1122(d)(4)(viii), the Company has engaged vendors to perform certain activities required by these servicing criteria. The Company has determined that the vendors are not considered a “servicer” as defined in Item 1101(j) of Regulation AB, and the Company has elected to take responsibility for assessing compliance with the servicing criteria applicable to these vendors as permitted by the SEC’s Compliance and Disclosure Interpretation 200.06, Vendors Engaged by Servicers (“C&DI 200.06”). As permitted by C&DI 200.06, the Company has asserted that it has policies and procedures in place designed to provide reasonable assurance that the vendors’ activities comply in all material respects with the servicing criteria applicable to these vendors. The Company is solely responsible for determining that it meets the SEC requirements to apply C&DI 200.06 for the vendors and related criteria as described in its assertion, and we performed no procedures with respect to the Company's determination of its eligibility to apply C&DI 200.06.

Our examination does not provide a legal determination on the Company's compliance with the servicing criteria.

In our opinion, management’s assertion that the Company complied with the aforementioned servicing criteria as of and for the year ended December 31, 2018, for the Consumer Automotive Receivables Platform, is fairly stated, in all material respects.

/s/ Deloitte & Touche LLP

Deloitte & Touche LLP

March 12, 2019

EX-34.2

Exhibit 34.2

Report of Independent Registered Public Accounting Firm

The Board of Directors

The Trust & Agency Services department of Deutsche Bank National Trust Company and

Deutsche Bank Trust Company Americas:

We have examined management’s assertion, included in the accompanying Management’s Assertion of Compliance, that the Trust & Agency Services department of Deutsche Bank National Trust Company and Deutsche Bank Trust Company Americas (collectively the Company) complied with the servicing criteria set forth in Item 1122(d) of the Securities and Exchange Commission’s Regulation AB (Servicing Criteria) for publicly-issued (i.e., transaction-level reporting required under the Securities Exchange Act of 1934, as amended) and certain privately-issued (i.e., for which transaction-level reporting is required pursuant to contractual obligation) residential mortgage-backed securities, commercial mortgage-backed securities and other asset-backed securities issued on or after January 1, 2006, for which the Company provides trustee, certificate administrator, securities administration, paying agent or custodian services, as defined in the transaction agreements, excluding publicly-issued securities sponsored or issued by any government sponsored entity (the Platform), except for Servicing Criteria 1122(d)(4)(iv) - 1122(d)(4)(xiv), which the Company has determined are not applicable to the activities it performs with respect to the Platform, as of and for the year ended December 31, 2018. With respect to Servicing Criteria 1122(d)(1)(ii), 1122(d)(1)(iii), 1122(d)(2)(iii) and 1122(d)(4)(iii), Management’s Assertion of Compliance indicates that there were no activities performed during the year ended December 31, 2018 with respect to the Platform, because there were no occurrences of events that would require the Company to perform such activities. The Company has determined the following Servicing Criteria to be applicable only to the activities the Company performs with respect to the Platform as described below:

• Servicing Criterion 1122(d)(1)(iii) is applicable only with respect to the Company’s continuing obligation to act as, or locate a, successor servicer under the circumstances referred to in certain transaction agreements. It is management’s interpretation that the Company has no other active back-up servicing responsibilities in regards to Servicing Criterion 1122(d)(1)(iii) as of and for the year ended December 31, 2018.

• Servicing Criterion 1122(d)(1)(v) is applicable only to the activities the Company performs related to the mathematically accurate aggregation of information received from servicers and the accurate conveyance of such information within reports to investors.

• Servicing Criterion 1122(d)(4)(iii) is applicable to the activities the Company performs with respect to the Platform only as it relates to the Company’s obligation to report additions, removals or substitutions on reports to investors in accordance with the transaction agreements.

Management is responsible for the Company’s compliance with the Servicing Criteria. Our responsibility is to express an opinion on management’s assertion about the Company’s compliance with the Servicing Criteria based on our examination.

Our examination was conducted in accordance with the standards of the Public Company Accounting Oversight Board (United States) and in accordance with attestation standards established by the American Institute of Certified Public Accountants to obtain reasonable assurance and, accordingly, included examining, on a test basis, evidence about the Company’s compliance with the Servicing Criteria and performing such other procedures as we considered necessary in the circumstances. Our examination included testing selected asset-backed transactions and securities that comprise the Platform, testing selected servicing activities related to the Platform, and determining whether the Company processed those selected transactions and performed those selected activities in compliance with the Servicing Criteria. Furthermore, our procedures were limited to the selected transactions and servicing activities performed by the Company during the period covered by this report. Our procedures were not designed to determine whether errors may have occurred either prior to or subsequent to our tests that may have affected the balances or amounts calculated or reported by the Company during the period covered by this report for the selected transactions or any other transactions. We believe that our examination provides a reasonable basis for our opinion. Our examination does not provide a legal determination on the Company’s compliance with the Servicing Criteria.

In our opinion, management’s assertion that the Company complied with the aforementioned Servicing Criteria, as of and for the year ended December 31, 2018, is fairly stated, in all material respects.

/s/KPMG LLP

Chicago, Illinois

February 28, 2019

EX-35.1

Exhibit 35.1

ALLY BANK

200 West Civic Center Drive

Sandy, Utah 84070

As of December 31, 2018

Deutsche Bank Trust Company Americas	BNY Mellon Trust of Delaware
As Indenture Trustee	As Owner Trustee
Attn:  Michelle H.Y. Voon	Attn: Robert Castle / Kristine Gullo
100 Plaza One 6th Floor	301 Bellevue Parkway, 3rd Floor
Jersey City, NJ 07311	Wilmington, DE 19809

Copy To:

The Bank of New York Mellon Trust Company, N.A.	Ally Auto Assets LLC
Attn:  Alvin Courts	Ally Bank
2 North LaSalle Street, Suite 700	Attn: Martha Tate
Chicago, IL  60602	200 West Civic Center Drive
	Sandy, UT 84070

Re:	Ally Auto Receivables Trust 2017-4
	Annual Statement as to Compliance

Ladies and Gentlemen:

Reference is made to Section 4.01 of the Servicing Agreement (the “Servicing Agreement”) dated as of August 23, 2017between Ally Bank, Ally Auto Assets LLC, and Ally Auto Receivables Trust 2017-4.

The undersigned does hereby certify that:

a. A review of the activities of the Servicer during the period of January 1, 2018 through December 31, 2018, and of its performance under the Servicing Agreement has been made under his supervision, and

b. To the best of his knowledge, based on such review, the Servicer has fulfilled all of its obligations under the Servicing Agreement throughout such period.

Very truly yours,

/s/ David J. DeBrunner

David J. DeBrunner

Vice President, Controller & Chief Accounting Officer