2021 BMW Z4 Reliability ReportKeepScore 83/100 · top failure points · buy or avoid
Quick Facts · 2021 BMW Z4
- Scores 5 points below the strongest nearby year — the 2020 BMW Z4 earns a 88.
- The system most likely to surface first: electrical systems & sensors (moderate severity).
- Has 5 NHTSA recalls on record — the most notable involves the seat belts.
2021 BMW Z4: Buy or Avoid?
The 2021 BMW Z4, benefiting from a robust shared platform with the Toyota Supra, represents a strong choice for those seeking a modern luxury roadster. While the engineering fundamentals are solid, especially with its impressive B-series engines, be prepared for premium ownership costs inherent to the BMW badge, even for minor issues.
Biggest Strengths
- Highly reliable B48/B58 engines
- Robust ZF 8HP automatic transmission
- Solid G29 platform shared with Toyota Supra
2021 BMW Z4 — Known Trouble Spots
The systems that break first on the 2021 BMW Z4. Mileage windows, repair costs, and fix-before-you-buy notes are in the full report.
Safety Recalls on the 2021 BMW Z4
5 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."
FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY
BMW of North America, LLC (BMW) is recalling certain 2020-2021 Z4 and 2020-2021 Toyota Supra vehicles. The weld between the fuel tank halves may have been insufficiently welded, causing the weld to fail.
What breaks on the 2021 BMW Z4?
Full reliability breakdown — engine, transmission, rust, electrical. With repair costs and mileage danger zones.
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BMW Z4 — Year-by-Year Comparison
Compare KeepScores across nearby years of the BMW Z4. Click any year for its full report.
Competing 2021s Worth a Look
Similar class, similar year range — ranked by KeepScore.
Relevant Products for Your 2021 BMW Z4
Parts and accessories matched to your 2021 BMW Z4
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Frequently Asked Questions
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