UNITED STATES
 SECURITIES AND EXCHANGE COMMISSION
 Washington, D.C. 20549
 FORM 10-K
 þANNUAL REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIESEXCHANGE ACT OF 1934
 For the fiscal year ended December 31, 2019
 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
 
 DELAWARE61-6587319(State or other jurisdiction of(I.R.S. Employerincorporation 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 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 companyþNon-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 IItem 1.Business*Item 1A.Risk Factors*Item 1B.Unresolved Staff CommentsItem 2.Properties*Item 3.Legal Proceedings*Item 4.Mine Safety DisclosuresPart IIItem 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 Procedures*Item 9B.Other InformationPart IIIItem 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 IVItem 15.Exhibits, Financial Statement SchedulesItem 16.Form 10-K Summary
 
 * Item is omitted in accordance with General Instructions J to Form 10-K.
 
 
 
 
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 Part I
 
 Item 1B. Unresolved Staff Comments
 
 None.
 
 Item 4. Mine Safety Disclosures
 
 Not applicable.
 
 Substitute information provided in accordance with General Instruction J to  Form 10-K:
 
 Item 1112(b) of Regulation AB. Significant Obligors of Pool Assets (Financial  Information).
 
 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, Except  for 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 (Financial  Information).
 
 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 to  Form 10-K:
 
 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.  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.
 
 
 
 
 
 
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 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, 2019, 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.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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 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, 2019.
 •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, 2019.
 •Registered Public Accounting Firm Attestation Report on Assessment of Compliance with applicable Servicing Criteria of Ally Bank dated March 13, 2020 for the year ended December 31, 2019.
 •Registered Public Accounting Firm Attestation Report on Assessment of Compliance with applicable Servicing Criteria of Deutsche Bank Trust Company Americas dated February 28, 2020 for the year ended December 31, 2019.
 •Servicer Compliance Statement of Ally Bank for the year ended December 31, 2019.
 •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.
 
 
 
 
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 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. FarrisRyan C. FarrisPresident(Senior Officer in charge of securitization of the depositor)
 
 Date: March 25, 2020
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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 Index of Exhibits
 
 ExhibitDescriptionMethod of Filing3.1Second Amended and Restated Limited Liability Company Agreement of Ally Auto Assets LLC, dated as of November 7, 2018.**4.1Indenture 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.*4.2Trust Agreement between Ally Auto Assets LLC, as Depositor, and BNY Mellon Trust of Delaware, as Owner Trustee, dated as of August 23, 2017.*4.3Pooling Agreement between Ally Bank, as Seller, and Ally Auto Assets LLC, dated as of August 23, 2017.*31.1Certification of Executive Officer Pursuant to Rule 13a-14(d)/15d-14(d).Filed herewith.33.1Report on Assessment of Compliance with SEC Regulation AB Servicing Criteria concerning activities of Ally Bank for the year ended December 31, 2019.Filed herewith.33.2Report on Assessment of Compliance with SEC Regulation AB Servicing Criteria concerning activities of Deutsche Bank Trust Company Americas for the year ended December 31, 2019.Filed herewith.34.1Registered Public Accounting Firm Attestation Report on Assessment of Compliance with applicable Servicing Criteria of Ally Bank dated March 13, 2020 for the year ended December 31, 2019.Filed herewith.34.2Registered Public Accounting Firm Attestation Report on Assessment of Compliance with applicable Servicing Criteria of Deutsche Bank Trust Company Americas, dated February 28, 2020 for the year ended December 31, 2019.Filed herewith.35.1Servicer Compliance Statement of Ally Bank for the year ended December 31, 2019.Filed herewith.99.1Trust Sale Agreement between Ally Auto Assets LLC, as Depositor, and the Issuing Entity, dated as of August 23, 2017.*99.2Custodian Agreement between Ally Bank, as Custodian, and Ally Auto Assets LLC, as Depositor, dated as of August 23, 2017.*99.3Administration Agreement among the Issuing Entity, Ally Bank, as Administrator, and the Indenture Trustee, dated as of August 23, 2017.*99.4Servicing Agreement among Ally Bank, as Servicer, Ally Auto Assets LLC, and the Issuing Entity, dated as of August 23, 2017.*99.5Asset 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).
 
 
 
 
 
 
 
 
 
 
 
 
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