Garrett Motion Inc

For the 2024 Annual Meeting of Stockholders

To be held on Wednesday, May 29, 2024

This proxy statement is being furnished in connection with the solicitation of proxies by the board of directors (the “Board”) of Garrett Motion Inc. (the “Company”, “Garrett”, “we” or “us”), for use at the 2024 Annual Meeting of stockholders (the “Annual Meeting”) to be held on Wednesday, May 29, 2024 at 8:30 a.m. Eastern Time (2:30 p.m. Central Europe Time), and at any postponement, continuation or adjournment thereof. The Annual Meeting will be a completely virtual meeting, which will be conducted via live webcast. You will be able to attend the Annual Meeting online and submit your questions during the meeting by visitingwww.virtualshareholdermeeting.com/GTX2024 and entering your 16-digit control number included in your Notice of Internet Availability of Proxy Materials, proxy card, or on the instructions that accompanied your proxy materials.

This proxy statement, proxy card and our 2023 Annual Report will be released on or about April 12, 2024.

Important Notice Regarding the Availability of Proxy Materials for the Annual

Meeting of Stockholders To Be Held on May 29, 2024:

This proxy statement and our 2023 Annual Report are available for viewing, printing and downloading at

www.proxyvote.com.