Statement to Securityholder

Ally Auto Receivables Trust 2017-4

Final Report


Distribution Information	Deal Information

1. Distribution Summary	Deal:	Ally Auto Receivables Trust 2017-4

2. Factor Summary	Asset Type:	Consumer Retail

3. Interest Summary	Closing Date:	8/23/2017

4. Collections and Distributions	Bloomberg Ticker:	ALLYA 2017-4

5. Collateral Summary	Collection Period, Begin:	4/1/2021
	Collection Period, End:	4/30/2021
6. Charge-Off and Delinquency Rates	Determination Date:	5/10/2021
	Distribution Date:	5/17/2021
7. Credit Instruments
	ABS Investor Relations - Ally Bank as Servicer:
8. Performance Tests	Telephone:	(866) 710-4623
	E-Mail:	securitization@ally.com
9. Asset Representations Delinquency Triggers

10. Supplemental Disclosures

11. Optional Purchase Price Summary

The Class B Notes, the Class C Notes, and the Class D Notes have not been registered under the United States Securities Act of 1933, as amended (the "Securities Act"), or

the securities laws of any other jurisdiction. The Class B Notes, the Class C Notes, and the Class D Notes are not transferable, other than to a qualified institutional buyer (as

defined in Rule 144A) or pursuant to another exemption under the Securities Act, and subject to satisfaction of certain other provisions of the Indenture.


During the January 2020 Collection Period the Servicer successfully converted to a new servicing and accounting technology platform for over four million customers, including the Obligors related to the Receivables and activity disclosed in this Statement to Securityholder. The information in this Statement to Securityholder reflects Collection Period activity as impacted by the servicing and accounting technology platform conversion, including the ongoing resolution of a limited conversion backlog with respect to certain servicing activities and the implementation of certain information technology coding changes.

Page 1 of 9

Statement to Securityholder

Ally Auto Receivables Trust 2017-4

Final Report

1. Distribution Summary


Class	CUSIP	Initial Note	Beginning Note	Note Rate	Principal	Interest	Pass Through	Total	Principal	Interest	Ending Note
		Principal Balance	Principal Balance		Distribution	Distribution	Distribution	Distribution	Carryover Shortfall	Carryover Shortfall	Principal Balance
								(3) + (4) + (5) = (6)			(1) - (3) - (7) = (9)
			(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)
A-1	02007FAA3	280,000,000.00	0.00	1.35000000	0.00	0.00	N/A	0.00	0.00	0.00	0.00
A-2	02007FAB1	337,000,000.00	0.00	1.59000000	0.00	0.00	N/A	0.00	0.00	0.00	0.00
A-3	02007FAC9	337,000,000.00	0.00	1.75000000	0.00	0.00	N/A	0.00	0.00	0.00	0.00
A-4	02007FAD7	91,830,000.00	29,901,253.75	1.96000000	29,901,253.75	48,838.71	N/A	29,950,092.46	0.00	0.00	0.00	*
B	02007FAE5	23,270,000.00	23,270,000.00	2.23000000	23,270,000.00	43,243.42	N/A	23,313,243.42	0.00	0.00	0.00	*
C	02007FAF2	19,390,000.00	19,390,000.00	2.43000000	19,390,000.00	39,264.75	N/A	19,429,264.75	0.00	0.00	0.00	*
D	02007FAG0	14,400,000.00	14,400,000.00	2.93000000	14,400,000.00	35,160.00	N/A	14,435,160.00	0.00	0.00	0.00	*
Certificates	N/A	N/A	N/A	N/A	N/A	N/A	17,719,088.24	17,719,088.24	N/A	N/A	N/A	*
Deal Totals		1,102,890,000.00	86,961,253.75		86,961,253.75	166,506.88	17,719,088.24	104,846,848.87	0.00	0.00	0.00

*Pursuant to Section 8.01 of the Servicing Agreement, Ally Bank as Servicer is exercising the option to purchase the assets of the Issuing Entity (other than the Designated Accounts), resulting in the redemption of the outstanding Notes by depositing in the Collection Account when required an amount equal to the greater of (a) the remaining unpaid Principal Balance of the Notes, plus accrued and unpaid interest, and any accrued and unpaid Basic Servicing Fee payments, and (b) the unpaid Aggregate Receivables Principal Balance plus accrued and unpaid interest.

Page 2 of 9

Statement to Securityholder

Ally Auto Receivables Trust 2017-4

Final Report

2. Factor Summary

(Amount per $1,000 of Original Principal)


Class	Beginning Note Pool Factor	Principal Distribution Factor	Interest Distribution Factor	Total Distribution Factor	Interest Carryover Shortfall Factor	Ending Note Pool Factor

A-1	0.0000000	0.0000000	0.0000000	0.0000000	0.0000000	0.0000000
A-2	0.0000000	0.0000000	0.0000000	0.0000000	0.0000000	0.0000000
A-3	0.0000000	0.0000000	0.0000000	0.0000000	0.0000000	0.0000000
A-4	325.6153082	325.6153082	0.5318383	326.1471465	0.0000000	0.0000000
B	1000.0000000	1000.0000000	1.8583335	1001.8583335	0.0000000	0.0000000
C	1000.0000000	1000.0000000	2.0250000	1002.0250000	0.0000000	0.0000000
D	1000.0000000	1000.0000000	2.4416667	1002.4416667	0.0000000	0.0000000


Beginning Aggregate Note Pool Factor:			78.8485286
Ending Aggregate Note Pool Factor:			0.0000000

Beginning Reserve Account Balance Factor:			1000.0000000
Reserve Account Draw, distributed to Noteholders, Factor:			0.0000000
Reserve Account Draw, distributed to Certificateholders, Factor:			1000.0000000
Ending Reserve Account Balance Factor:			0.0000000

Page 3 of 9

Statement to Securityholder

Ally Auto Receivables Trust 2017-4

Final Report

3. Interest Summary

A. Target Interest Summary

Class

Beginning Note Principal Balance

Interest Accrual Period, Start

Interest Accrual Period, End

Accrual Methodology

Applicable Index

Margin

Fixed

Note Rate

Target Interest Distribution

A-1

0.00

4/15/2021

5/16/2021

Actual/360

N/A

1.35000000

0.00

A-2

0.00

4/15/2021

5/16/2021

30/360

N/A

1.59000000

0.00

A-3

0.00

4/15/2021

5/16/2021

30/360

N/A

1.75000000

0.00

A-4

29,901,253.75

4/15/2021

5/16/2021

30/360

N/A

1.96000000

48,838.71

23,270,000.00

4/15/2021

5/16/2021

30/360

N/A

2.23000000

43,243.42

19,390,000.00

4/15/2021

5/16/2021

30/360

N/A

2.43000000

39,264.75

14,400,000.00

4/15/2021

5/16/2021

30/360

N/A

2.93000000

35,160.00

B. Interest Payment Amount Summary


Class	Beginning Unpaid Interest Carryover Shortfall	Target Interest Distribution	Interest Shortfall Amount Allocated/(Repaid)	Actual Interest Distribution (2) - (3) = (4)	Remaining Unpaid Interest Carryover Shortfall (1) + (3) = (5)
	(1)	(2)	(3)	(4)	(5)
A-1	0.00	0.00	0.00	0.00	0.00
A-2	0.00	0.00	0.00	0.00	0.00
A-3	0.00	0.00	0.00	0.00	0.00
A-4	0.00	48,838.71	0.00	48,838.71	0.00
B	0.00	43,243.42	0.00	43,243.42	0.00
C	0.00	39,264.75	0.00	39,264.75	0.00
D	0.00	35,160.00	0.00	35,160.00	0.00
Deal Totals	0.00	166,506.88	0.00	166,506.88	0.00

Page 4 of 9

Statement to Securityholder

Ally Auto Receivables Trust 2017-4

Final Report

4. Collections and Distributions


Collections
Receipts During the Period			9,536,403.39
Administrative Purchase Payments			9,706.43
Warranty Payments			0.00
Liquidation Proceeds Including Recoveries (Net of Liquidation Expenses)			235,828.37
Other Fees or Expenses Paid			0.00
Optional purchase price for the assets of the Issuing Entity (the "Optional Purchase Price")*			92,381,215.08
Total Collections			102,163,153.27

Beginning Reserve Account Balance			2,769,665.19
Total Available Amount plus the Optional Purchase Price			104,932,818.46

Distributions
Total Available Amount plus the Optional Purchase Price			104,932,818.46
Basic Servicing Fee			84,469.59
Amounts owing to the Asset Representations Reviewer, Indenture Trustee, and Vote Tabulation Agent in connection with an Asset Representations Review			0.00
Aggregate Class A Interest Distributable Amount			48,838.71
First Priority Principal Distributable Amount			0.00
Aggregate Class B Interest Distributable Amount			43,243.42
Second Priority Principal Distributable Amount			0.00
Aggregate Class C Interest Distributable Amount			39,264.75
Third Priority Principal Distributable Amount			0.00
Aggregate Class D Interest Distributable Amount			35,160.00
Fourth Priority Principal Distributable Amount			0.00
Reserve Account Deposit			0.00
Noteholders' Regular Principal Distributable Amount related to the final Distribution Date*			86,961,253.75
Indenture Trustee expenses			0.00
Unpaid Fees due to Owner Trustee, Indenture Trustee, Administrator and Asset Representations Reviewer			1,500.00
Excess to the Certificateholders*			17,719,088.24

Supplemental Servicing Fees			29,301.75
Other Fees or Expenses Accrued			0.00
Liquidation Expenses			8,400.00

*Refer to Section 11 "Optional Purchase Price Summary" for additional details

Page 5 of 9

Statement to Securityholder

Ally Auto Receivables Trust 2017-4

Final Report

5. Collateral Summary

A. Balances


		Original Balance	Beginning Balance	Ending Balance*
Deal Totals	Number of Receivables	70,003	17,721	16,774
	Aggregate Receivables Principal Balance	1,107,866,076.72	101,363,512.75	92,065,445.18
	Aggregate Amount Financed	1,107,866,076.72	101,363,512.75	92,065,445.18

*Prior to the Servicer exercising its option to purchase the assets of the Issuing Entity.

There have been no receivables with respect to which material breaches of pool asset representations or warranties or transaction covenants have occurred.

B. Pool Composition - Weighted Averages

Inception

Beginning

Ending

Inception

Beginning

Ending

Inception

Beginning

Ending

Weighted

Average

Coupon

Original

Remaining

Maturity

Deal Totals

5.61000000

6.42243228

6.45787338

65.59

69.47

69.61

52.30

19.96

19.24

C. Pool Composition - Prepayments


Month	1		2		3		4		5		6		7		8		9		10		11		12		13		14		15		16		17		18		19		20
Monthly	1.30	%	1.18	%	1.30	%	1.21	%	1.11	%	1.33	%	1.12	%	1.40	%	1.28	%	1.22	%	1.19	%	1.23	%	1.28	%	0.99	%	1.23	%	1.09	%	1.14	%	1.17	%	1.07	%	1.17	%

Month	21		22		23		24		25		26		27		28		29		30		31		32		33		34		35		36		37		38		39		40
Monthly	1.27	%	1.25	%	1.03	%	1.27	%	1.21	%	1.17	%	1.21	%	1.07	%	1.19	%	1.09	%	1.04	%	1.12	%	0.75	%	0.83	%	0.94	%	1.04	%	1.12	%	1.13	%	1.10	%	0.96	%

Month	41		42		43		44		45		46		47		48		49		50		51		52		53		54		55		56		57		58		59		60
Monthly	1.13	%	1.08	%	0.92	%	1.32	%	1.13	%

Page 6 of 9

Statement to Securityholder

Ally Auto Receivables Trust 2017-4

Final Report

6. Charge-Off and Delinquency Rates

A. Current


	Charge-Off Rate						Delinquency Rate
	Average Aggregate Amount Financed	Number of Units Charged-Off	Net Charge-Offs	Average Net Charge-Offs	Loss Rate		Total Accounts	Accounts over 60	Percent Delinquent
Current	96,714,478.97	28	28,846.07	1,030.22	0.3579	%	16,774	59	0.3517	%
Preceding	106,981,215.98	34	72,875.88	2,143.41	0.8174	%	17,721	55	0.3104	%
Next Preceding	117,324,102.62	22	18,785.87	853.90	0.1921	%	18,998	94	0.4948	%
Third Preceding	127,369,135.25	27	112,985.65	4,184.65	1.0645	%	Three Month Average		0.3856	%
Four Month Average					0.6080	%

B. Cumulative


	Aggregate Amount	Cumulative Net	Cumulative Loss Rate		Delinquency	Total	Total Balance	Percent
	Financed	Charge-Offs			Stratification	Accounts		Delinquent
Totals	1,107,866,076.72	9,596,343.29	0.8662	%	31 - 60 days	161	1,303,502.69	1.4158	%
The information contained in this report is defined or determined in a manner consistent with the prospectus for Ally Auto Receivables					61 - 90 days	49	513,296.45	0.5575	%
Trust 2017-4 related to delinquencies, charge-offs or uncollectible accounts.					91 - 120 days	9	67,973.25	0.0738	%
					> 120 days	1	74.00	0.0001	%
There have been no material changes in determining delinquencies, charge-offs or uncollectible amounts.

					Bankruptcies		Total Accounts	Total Balance
					Prior Period1		283	1,940,889.63
					Additions		4	28,226.75
1. Total Balance for Prior Period reflects the aggregate balance as of the last day of the related Collection Period.					Removals2		17	65,555.80
2. Removals include bankruptcies returned to active status, bankruptcies paid-in-full, and charge-offs on prior period bankruptcies.					Ending Inventory		270	1,903,560.58

7. Credit Instruments

A. Reserve Accounts


Account	Initial Balance	Beginning Balance	ADDITIONS	REDUCTIONS		Ending Balance	Specified Reserve Account Balance
				Draws	Releases*
Cash Reserve	2,769,665.19	2,769,665.19	0.00	0.00	2,769,665.19	0.00	0.00

*In connection with the Servicer exercising its option to purchase the assets of the Issuing Entity.

Page 7 of 9

Statement to Securityholder

Ally Auto Receivables Trust 2017-4

Final Report

8. Performance Tests (prior to the Servicer exercising its option to purchase the assets)


Event of Default			All Tests Passed
Servicer Default			All Tests Passed
Asset Representations Review Delinquency Trigger			PASS
Overcollateralization Target reached?			YES
Initial Overcollateralization			4,976,076.72
Current Overcollateralization			14,402,259.00
Overcollateralization Target			14,402,259.00

9. Asset Representations Delinquency Triggers


Period	1		2		3		4		5		6		7		8		9		10		11		12		13		14		15		16		17		18		19		20
Trigger Level	1.25	%	1.25	%	1.25	%	1.25	%	1.25	%	1.25	%	1.25	%	1.25	%	1.25	%	1.25	%	1.25	%	1.25	%	1.60	%	1.60	%	1.60	%	1.60	%	1.60	%	1.60	%	1.60	%	1.60	%
61+ Delinquencies	0.02%		0.13%		0.17%		0.22%		0.26%		0.26%		0.25%		0.19%		0.23%		0.28%		0.32%		0.31%		0.31%		0.37%		0.37%		0.41%		0.46%		0.50%		0.40%		0.34%

Period	21		22		23		24		25		26		27		28		29		30		31		32		33		34		35		36		37		38		39		40
Trigger Level	1.60	%	1.60	%	1.60	%	1.60	%	1.80	%	1.80	%	1.80	%	1.80	%	1.80	%	1.80	%	1.80	%	1.80	%	1.80	%	1.80	%	1.80	%	1.80	%	2.25	%	2.25	%	2.25	%	2.25	%
61+ Delinquencies	0.36%		0.34%		0.42%		0.50%		0.52%		0.59%		0.60%		0.61%		0.69%		0.75%		0.65%		0.46%		0.27%		0.17%		0.16%		0.23%		0.39%		0.63%		0.66%		0.85%

Period	41		42		43		44		45		46		47		48		49		50		51		52		53		54		55		56		57		58		59		60
Trigger Level	2.25	%	2.25	%	2.25	%	2.25	%	2.25	%	2.25	%	2.25	%	2.25	%	2.25	%	2.25	%	2.25	%	2.25	%	2.25	%	2.25	%	2.25	%	2.25	%	2.25	%	2.25	%	2.25	%	2.25	%
61+ Delinquencies	0.79%		0.83%		0.72%		0.49%		0.63%

10. Supplemental Disclosures


Number of Receivables extended during the current Collection Period			22

Other than as disclosed above in Section 10 of this Statement to Securityholder, there have been no material modifications, extensions, or waivers relating to the terms of or fees, penalties or payments on, pool assets during the distribution period or that, cumulatively, have become material over time.

This Servicer Certificate relates only to AART 2017-4. This Servicer Certificate should not be relied upon with respect to any other security. The information contained herein is only an indication of past performance and does not predict how AART 2017-4 will perform in the future.

Page 8 of 9

Statement to Securityholder

Ally Auto Receivables Trust 2017-4

Final Report

11. Optional Purchase Price Summary


Aggregate Receivables Principal Balance - Ending Balance			92,065,445.18
Accrued and unpaid interest on the assets			315,769.90
Optional Purchase Price			92,381,215.08

Noteholders' Regular Principal Distributable Amount related to the Collection Period			9,298,067.57
Noteholders' Principal Distributable Amount related to the satisfaction of the outstanding Notes			77,663,186.18
Noteholders' Regular Principal Distributable Amount related to the final Distribution Date			86,961,253.75

Excess Total Available Amount for the Collection Period			231,394.15
Cash Reserve (available to Certificateholders)			2,769,665.19
Current Overcollateralization (available to Certificateholders)			14,402,259.00
Accrued and unpaid interest on the assets (available to Certificateholders)			315,769.90
Excess to the Certificateholders			17,719,088.24

Page 9 of 9

Ally Auto Receivables Trust 2017-4 10-D