Vehicle brake very very loudly. BMw claims this is normal, this is not true. Vehicle has extremely low miles and performs bad when braking.
The worst 2021 BMW M4 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Brakes1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Brakes1
Recalls 2
Seat belts
- What is wrong
- 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 sDrive28i, X2 xDrive28i, X2 M35i, Z4 sDrive30i, Z4 M40i, MINI Hardtop 2 Door (Cooper SE), MINI Convertible (Cooper, Cooper S, JCW), MINI Clubman (Cooper S, Cooper S All4, JCW), MINI Countryman (Cooper, Cooper All4, Cooper S, Cooper S All4, JCW All4), Rolls Royce Ghost, MINI Countryman (Cooper S E All4), Rolls Royce Phantom, Rolls Royce Cullinan, and Toyota Supra vehicles. The passenger seat belt Automatic Locking Retractor (ALR) may deactivate early, before the webbing fully retracts. As such, these assemblies fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."
- Risk
- During a crash, a seat belt retractor that does not function as intended increases the risk of injury.
- Remedy
- 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).
Recall number 21V554000 · Recall details
Service brakes, hydraulic: power assist: hydraulic
- What is wrong
- 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 brake system may not have been welded properly and could separate during a hard braking event, possibly resulting in a loss of the Antilock Brake System (ABS) and braking assistance.
- Risk
- A loss of ABS and a reduction in braking assistance can increase the risk of a crash.
- Remedy
- 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.
Recall number 21V062000 · Recall details
Technical service bulletins for the 2021 BMW M4 72
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- While driving on a smooth and/or unevenroad, a “cracking” sound is heard from therear wheel arch area...
- While driving on a smooth and/or uneven road, a “cracking” sound is heard from the rear wheel arch area...
- An interference noise (groaning noise) can be heard from within the heating and air-conditioning unit in...
- The electrical system of BMW vehicles has been subject to an ongoing development process over the last few...
- With the vehicle is on a lift and the front struts are in the extended position, there may be a cracking...
- At low outside temperatures (below 40 degrees F) and slow driving speeds (i.e. when parking,...
- The Central Information Display goes black intermittently due to resets of the Head Unit (HU-H3)....
- Customer states one of the front seats is inoperative
- Functional noises (squealing/honking) when braking shortly before the vehicle comes to a stop
- BMW AG has issued a Delivery Stop effective June 6, 2023 on certain Model Year 2023
What 2021 BMW M4 owners say
Most recent owner complaints, unedited.
Compare the 2021 BMW M4
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Questions about the 2021 BMW M4
Is the 2021 BMW M4 reliable?
Owners have filed 1 complaint about the 2021 BMW M4, fewer than a typical M4 model year.
What is the most common problem with the 2021 BMW M4?
Brakes, with 1 complaint.
How many recalls does the 2021 BMW M4 have?
2 recalls, covering seat belts and service brakes, hydraulic.
Was there a recall on the 2021 BMW M4 brakes?
Yes, 1 recall: 21V062000. Check your VIN to see if your car still needs the free repair.
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