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2021 BMW M4 problems, recalls and owner complaints
What the 2021 BMW M4 has been recalled for and what owners report, from official government data. Updated October 25, 2026.
- 2safety recalls
- 1owner complaint
- 0crash reports
- 0fire reports
- 0injuries reported
1 complaints, against an average of 8 for the other 5 BMW M4 model years.
Every BMW M4 model year with its number of owner complaints. Pick a year to compare.
What goes wrong with the 2021 BMW M4?
The components named most often in the 1 owner complaints. One complaint can name several, so the shares can add up to more than 100%.
Has the 2021 BMW M4 been recalled?
2 U.S. safety recalls. Repairs are free at a franchised dealer; some are done over the air.
Seat Belts 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.
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 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.
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.
Is the 2021 BMW M4 recalled in the UK or Europe?
Recalls issued by the UK's DVSA and through the EU's Safety Gate system that cover this model and build period. European models can differ from U.S. ones, and "years estimated" means the recall gave no build dates, so confirm your own car with your registration or VIN.
UK DVSAOn certain vehicles the Body Domain Controller (BDC) control unit may have an incorrect setting applied to it.
Risk: On certain vehicles the Body Domain Controller (BDC) control unit may have an incorrect setting applied to it.
Fix: Conduct a check of the settings and if necessary perform a reset on the BDC control unit.
UK DVSAThe integrated brake system hydraulic unit may have been produced incorrectly
Risk: The Integrated Brake system hydraulic unit may have been produced incorrectly
Fix: Replace the Integrated Brake system hydraulic unit.
UK DVSAThe damping elements may be missing from some injectors which could affect fuel lines and lead to leaks
Risk: On affected vehicles the damping elements may be missing from some injectors which could affect fuel lines and lead to leaks.
Fix: Check and install/replace damping elements. Replace high pressure fuel rail if necessary.
EU Safety GateThe screws which were used to assemble seatbelts and also on the rear seats of the vehicles concerned may not have been manufactured in…The screws which were used to assemble seatbelts and also on the rear seats of the vehicles concerned may not have been manufactured in accordance with specifications. In some cases, the screws in question cannot withstand extreme loads, which could increase the risk of injury in the event of an accident.
Measures: Type of economic operator taking notified measure(s): Manufacturer; Category of measure(s): Recall of the product from end users; Date of entry into force: Unknown
EU Safety GateDefective hydraulic unit of the braking system may cause a limited braking support and increased braking distance.Moreover, in such cases the ABS system would not be available. This will lead to increased risk of an accident.
Measures: Type of economic operator taking notified measure(s): Manufacturer; Category of measure(s): Recall of the product from end users; Date of entry into force: Unknown
EU Safety GateThe fuel injectors may not have been equipped with a decoupling element.This could result in a vibration fracture at the soldering point of the high-pressure fuel rail.Consequently, fuel could leak into the engine compartment, increasing the risk of fire.
Measures: Type of economic operator taking notified measure(s): Manufacturer; Category of measure(s): Recall of the product from end users; Date of entry into force: Unknown
What do 2021 BMW M4 owners report?
1 of the 1 complaints, the most recent for the most-reported components, as the owners wrote them. NHTSA removes names and VINs; long reports are trimmed. CarHooq has not verified individual claims.
Vehicle brake very very loudly. BMw claims this is normal, this is not true. Vehicle has extremely low miles and performs bad when braking.
2021 BMW M4: questions owners ask
Is the 2021 BMW M4 reliable?
NHTSA data alone cannot rate reliability, but it shows what owners reported. Owners filed 1 complaint with NHTSA about the 2021 BMW M4; the most common categories were service brakes (1, 100%). There are 2 safety recalls.
What are the most common problems with the 2021 BMW M4?
Across 1 owner complaint filed with NHTSA, the categories mentioned most often are service brakes (100% of complaints). One complaint can name several components.
Does the 2021 BMW M4 have any recalls?
Yes. NHTSA lists 2 recalls for the 2021 BMW M4; the most recent (campaign 21V554000, 2021-07-21) concerns Seat Belts. Recall repairs are free at a franchised dealer; check your VIN at nhtsa.gov/recalls.
Check your own M4
Counts are a starting point, not a verdict: popular models collect more complaints because more of them are on the road, and NHTSA does not verify individual reports. To see whether a recall is still open on your car, enter your VIN at nhtsa.gov/recalls (U.S.) or your registration at check-vehicle-recalls.service.gov.uk (UK). Had a safety problem? Report it to NHTSA; complaints are what trigger investigations and recalls.
Data: NHTSA Office of Defects Investigation recall and complaint databases (public domain), DVSA vehicle recalls (Open Government Licence v3.0), EU Safety Gate alerts (© European Union), retrieved October 25, 2026. Model year 2021 only.