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: Equipment and accessories are shown. Show all
| B511121 | 2021-07-19. 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. |
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| B650421 | 2021-05-24. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. RETROFIT SATELLITE RADIO (OPTION CODE SA655): The affected vehicles were produced with Preparation BMW Satellite Radio (option code SA 693) instead of with Satellite Radio (option code SA 655). |
| B011220 | 2021-02-01. Service bulletin. TIRES; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. BMW MAINTENANCE BOOKLET AND OEM TIRE MANUFACTURERS' WARRANTIES: In efforts to provide a digital experience to our customers, BMW of North America, LLC (BMW NA) is proud to announce a digital version of both the BMW Maintenance Booklet and BMW Original Equipment Manufacturers' (OEM) Tire Warranties. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.