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Service bulletins for the 2021 BMW M4

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

72 on file from NHTSA, as of 2026-10-19.

By type

By component

Only bulletins with component: Body and frame are shown. Show all

Bulletins, newest first
B4107252026-01-23. Service bulletin. STRUCTURE:BODY. While driving on a smooth and/or unevenroad, a “cracking” sound is heard from therear wheel arch area (highlighted in orange) on either the right or left side.
B4107252025-08-24. Service bulletin. STRUCTURE:BODY. While driving on a smooth and/or uneven road, a “cracking” sound is heard from the rear wheel arch area (highlighted in orange) on either the right or left side.
B5146162023-06-26. Service bulletin. STRUCTURE:BODY:TAILGATE. Upon opening and closing the tailgate, a creaking/groaning sound can be heard from tailgate actuator.
B5111212021-07-19. Service bulletin. EQUIPMENT; STRUCTURE:BODY:ROOF AND PILLARS; EQUIPMENT ADAPTIVE/MOBILITY. ROOF TRIM STRIP LOOSE AT REAR: The roof trim strip may be loose at the last (rearmost) clip as shown. This can occur on either side of the roof, or on both sides.
B5110212021-07-19. Service bulletin. BACK OVER PREVENTION; STRUCTURE:BODY:TRUNK LID. SERVICE ACTION: CHECK BADGE ON TAILGATE, REPLACE IF NECESSARY . The "BMW" trunklid emblem (arrow) which contains the rear-view camera may not have been correctly fastened during vehicle production. It is possible that the emblem & camera may become detached from the vehicle, such as when going through an automated car wash.
B5107212021-05-24. Service bulletin. STRUCTURE:BODY:DOOR. INCREASED EFFORT REQUIRED TO OPEN DOORS: One or more doors may require increased effort to open.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.