2021 Bmw M4 problems, complaints & recalls
Most-reported problem areas: Service Brakes (1)
Safety recalls (2)
Seat Belts 2021-07-21 · campaign 21V554000 · 21,537 vehicles
Defect: BMW of North America, LLC (BMW) is recalling certain 2021 2 Series (230i, 230i xDrive, M240i, M240i xDrive), 330e, 330e Xdrive, 4 Series Coupe (430i, 430i xDrive, M440i xDrive) M4 Coupe, M4 Competition Coupe, BMW 4 Series Convertible (430i, M440i), BMW X1 sDrive28i, xDrive28i, 2 Series Gran Coupe (228i, 228i xDrive, M235i xDrive), M2 Competition Coupe, 330i, 330i xDrive, M340i, M340i xDrive, M3, M3 Competition, 530i, 530i xDrive, 540i, 540i xDrive, MINI Hardtop 2 Door (Cooper, CooperS, JCW), X2
Risk: During a crash, a seat belt retractor that does not function as intended increases the risk of injury.
Fix: Dealers will inspect the seat belt retractors (including the seat belts) and, if necessary, replace the retractors, free of charge. Owner notification letters were mailed on September 3, 2021. Owners may contact BMW customer service at 1-800-525-7417; 1-866-825-1525 (MINI); 1-877-877-3735 (Rolls Royce); and 1-888-270-9371 (Toyota).
Service Brakes, Hydraulic:power Assist:hydraulic 2021-02-10 · campaign 21V062000 · 893 vehicles
Defect: BMW of North America, LLC (BMW) is recalling certain 2020-2021 8 Series Coupe, Grand Coupe and convertible 840i, 840i xDrive, M850i xDrive, M8 and 740 Li, 740 Li xDrive, 750 Li xDrive, M760 Li xDrive, X6 sDrive40i, X6 xDrive40i, X6 xdrive50i, X6 M50i, X6M, and 2019-2021 X5 sDrive40i, X5 xDrive40i, X5 xDrive50i, X5 M50i, X5M, X7 xDrive40i, X7 xDrive50i, X7 M50i, and 2021 M3, M3 Competition, M4 Coupe, M4 Competition Coupe, X5 xDrive45e, 745 Le xDrive. The rotor and shaft within the integrated bra
Risk: A loss of ABS and a reduction in braking assistance can increase the risk of a crash.
Fix: BMW will notify owners, and dealers will replace the integrated brake system, free of charge. Owner notification letters were mailed on May 25, 2021. Owners may contact BMW customer service at 1-800-525-7417.
Service bulletins (72)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Structure:body 2026-01-08 · B410725 · Service Bulletin/Repair Instructions
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.
Structure:body 2025-08-20 · B410725 · Service Bulletin/Repair Instructions
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.
Visibility:defroster/Defogger/Hvac System 2024-02-16 · B640422 · Service Bulletin/Repair Instructions
an interference noise (groaning noise) can be heard from within the heating and air-conditioning unit in thecenter of the instrument panel. the groaning noise always occurs when either a ventilation flap, air stratification flap or the recirculated airflap moves to a different position. due to the
Electrical System 2024-01-11 · B611305 · Service Bulletin/Repair Instructions
the electrical system of bmw vehicles has been subject to an ongoing development process over the last few years. this has led to increased demands being placed on the battery. this document covers important information for the dealer on how to handle ã¢ââdischarged batteryã¢ââ complaints.
Suspension 2024-01-09 · B310124 · Service Bulletin/Repair Instructions
with the vehicle is on a lift and the front struts are in the extended position, there may be a cracking and orclicking type noise when turning the steering wheel left/right. see attached video v31 01 24. the sound can reoccur when the vehicle is lowered, and the wheels are once again under load. t
Steering 2024-01-08 · B360121 · Service Bulletin/Repair Instructions
at low outside temperatures (below 40 degrees f) and slow driving speeds (i.e. when parking, maneuvering)with a large steering angle, the front end can be slightly axially misaligned. this can be felt (jerking)/ heard via an acoustic acknowledgement (clunk) as seen at the 11 second mark of the vide
Showing the 6 most recent of 72 bulletins. Search all of them free at nhtsa.gov.
What owners report
2024-06-13 · Service Brakes“vehicle brake very very loudly. bmw claims this is normal, this is not true. vehicle has extremely low miles and performs bad when braking. …”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.