Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement No. 333-256656 on Form S-8 of our reports dated February 14, 2022, relating to the financial statements of Garrett Motion Inc. (the “Company”),and the effectiveness of the Company’s internal control over financial reporting appearing in the Annual Report on Form 10-K of the Company for the year ended December 31, 2021.

/s/ Deloitte SA

Geneva, Switzerland

February 14, 2022