2021 BMW M3 Reliability ReportC+ grade · moderate risk · system-by-system breakdown
Quick Facts · 2021 BMW M3
- The system most likely to surface first: electrical & infotainment systems (moderate severity).
- Has 3 NHTSA recalls on record — the most notable involves the seat belts.
- Scores 4 points below the strongest nearby year — the 2023 BMW M3 earns a 82.
Is the 2021 BMW M3 Worth Buying?
The 2021 BMW M3 delivers exhilarating performance and advanced technology, but it's crucial to understand that this comes with a higher expected cost of ownership and the potential for complex, expensive repairs should issues arise. While the core mechanicals are generally robust for a performance vehicle, its intricate electronic systems and high-stress components demand proactive, specialized maintenance and a substantial budget. This is not a 'set it and forget it' vehicle, but for an enthusiast, it's a rewarding machine.
Biggest Strengths
- Robust S58 twin-turbo engine (for a performance unit)
- Highly reliable ZF 8HP automatic transmission
- Excellent build quality and premium materials
What Tends to Fail First on the 2021 BMW M3
The systems that break first on the 2021 BMW M3. Mileage windows, repair costs, and fix-before-you-buy notes are in the full report.
2021 BMW M3 Recall History
3 recalls on record from NHTSA. Check your VIN atnhtsa.gov to see if the repair was performed.
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."
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.
What breaks on the 2021 BMW M3?
Full reliability breakdown — engine, transmission, rust, electrical. With repair costs and mileage danger zones.
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Other BMW M3 Years to Consider
Compare KeepScores across nearby years of the BMW M3. Click any year for its full report.
2021 BMW M3 Alternatives
Similar class, similar year range — ranked by KeepScore.
Relevant Products for Your 2021 BMW M3
Parts and accessories matched to your 2021 BMW M3
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Frequently Asked Questions
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