Exhibit 23.1

Ally Financial Inc.

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement No. 333-258575 on Form S-8 of our report dated March 27, 2023, relating to the financial statements of Ally Financial Inc. Employee Stock Purchase Plan, appearing in this Annual Report on Form 11-K for the year ended December 31, 2022.

/S/DELOITTE & TOUCHE LLP

Deloitte & Touche LLP

March 27, 2023