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Model reliability
BMW Z3 reliability
The BMW Z3 fails its MOT less often than most cars over 10 years old: 31.8% of 12,713 tests failed in 2023, against 39.7% on average.
Over 10 years old
31.8% failed their MOT
From 12,713 MOT tests of BMW Z3s this age.
Where it does worse than other cars this age
Fails 47% more oftenExhaust emissions7.5% vs 5.1%Fix about £150
Fails 31% more oftenWashers4.6% vs 3.5%
Fails 4× as oftenSRS malfunction indicator lamp3.3% vs 0.9%Fix about £30
Fails 82% more oftenRigid brake pipes3.1% vs 1.7%Fix about £120
Advised 2× as oftenRigid brake pipes20.3% vs 8.3%Fix about £120
Advised 3× as oftenFlexible brake hoses7.9% vs 2.6%Fix about £120
Checking a BMW Z3 before you buy
Look at the parts above at the viewing, and read the car’s own MOT history: advisories for the same parts suggest the problem is already starting. Sweep’s free check shows every MOT, advisory and mileage reading for a registration.
Source: DVSA anonymised MOT tests 2023 (Open Government Licence v3.0). Failure rates compare this model with all cars in the same age band. Fix prices are typical independent-garage estimates.