YearToAvoid

2021 BMW M3 Problems, Recalls & Reliability

Verdict

No verdict

Complaint Index

42/100

#8 most-complained of 13 M3 years

The 2021 BMW M3 has a complaint index of 42 with 3 complaints and 3 recalls, ranking 8th worst out of 13 model years. It sits in the middle of the pack, well below the 2011 (index 100) and 2013 (index 92) years.

Complaints
3
Recalls
3
Crashes / fires
0 / 0
Injuries / deaths
0 / 0
NHTSA overall rating
Not rated
EPA combined MPG
19
16 city / 23 hwy

Top 2021 BMW M3 problems

NHTSA owner complaints by component group. Groups with 15+ complaints have their own page.

  1. Airbags1 (33%)
  2. Other1 (33%)
  3. Seat Belts1 (33%)
  4. Steering1 (33%)
  5. Suspension, Wheels & Tires1 (33%)

What owners report

  • Owners report a dashboard warning message stating the passenger restraint system had malfunctioned.
  • Some owners describe loud clunking and creaking noises coming from the front suspension when driving over uneven or bumpy road surfaces.
2021 BMW M3 complaints: complaints filed per month2Aug 2024Aug 2025Apr 2026
5 complaints filed with NHTSA from Aug 2024 to Apr 2026; peak Aug 2024 (2).

2021 BMW M3 recalls

3 NHTSA recall campaigns list this model year.

  1. NHTSA 21V554000Jul 21, 2021Seat Belts21,537 vehicles

    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.

    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).

  2. NHTSA 21V298000Apr 28, 2021Seat Belts12 vehicles

    Seat belts:front:buckle assembly

    BMW of North America, LLC (BMW) is recalling certain 2021 330i, 330i xDrive, M340i, M3, and 330e xDrive vehicles. The bolt securing the seat belt assembly to the frame was not tightened to specification.

    Risk: An improperly installed seat belt assembly may not restrain an occupant as expected, increasing the risk of injury.

    Remedy: BMW will notify owners, and dealers will inspect the front seat belt buckle assembly connection and, if necessary, replace it, free of charge. Owner notification letters were mailed on June 25, 2021. Owners may contact BMW customer service at 1-800-525-7417.

  3. NHTSA 21V062000Feb 10, 2021Brakes893 vehicles

    Service brakes, hydraulic:power assist: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.

    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.

2021 BMW M3 fuel economy and fuel cost

City
16 MPG
Highway
23 MPG
Combined
19 MPG
Annual fuel cost (EPA)
$4,200
15,000 mi/yr
Fuel
Premium
Current regular gas
$4.32/gal
national avg.

EPA figures; median across configurations of this model year. Estimate your own cost with the fuel cost calculator.

2021 compared with other M3 years

Complaint Index by model year (0 = fewest issues, 100 = most)0255075100’10’11’12’13’14’15’16’17’18’21’22’23’25
Complaint Index: 0 = fewest issues, 100 = most, relative to other years of this model. Avoid Caution Good Best
YearVerdictIndexComplaintsRecallsMPG
2017No verdict173219.5
2018Avoid759020
2021No verdict423319
2022No verdict81019
2023No verdict581119

All BMW M3 years: best and worst →

Frequently asked questions

Is the 2021 BMW M3 reliable?
Based on NHTSA owner complaints and recalls, the 2021 M3 has a complaint index of 42, ranking 8th worst among 13 model years of the M3. It has fewer reported problems than higher-index years like 2011 and 2013.
What problems does the 2021 BMW M3 have?
NHTSA lists 3 complaints for the 2021 M3, spread evenly across airbags, seat belts, steering, and suspension/wheels/tires, each accounting for 33% of complaints.
Does the 2021 BMW M3 have any recalls?
Yes, NHTSA lists 3 recalls for the 2021 M3, covering seat belt retractor bolts, seat belt buckle assembly connections, and the integrated brake system, none of which are do-not-drive recalls.
How does the 2021 M3 compare to other M3 years?
The 2021 M3's complaint index of 42 ranks 8th worst out of 13 years tracked, better than 2011 (100), 2013 (92), and 2018 (75), but worse than 2016 (33) and 2022 (8).

Sources: NHTSA Office of Defects Investigation complaint and recall databases; U.S. EPA fuel economy data; NHTSA 5-Star Safety Ratings. Complaints are unverified owner reports.

Data updated Sep 24, 2026. Read the methodology and data sources. The Complaint Index is based on NHTSA owner complaints and recalls; it is not a reliability rating.