BMW 420I M Sport Auto reliability
MOT pass rates & common faults · 6,865 real DVSA tests · 2024
Across 6,865 real DVSA MOT tests in 2024, 92% of BMW 420I M Sport Auto cars aged up to 3 years pass their MOT first time — in line with the 89% average for cars of that age. It holds up especially well on body & structure and brakes.
MOT pass rate by age
Where the 420I M Sport Auto tends to fail
Share of BMW 420I M Sport Auto cars aged up to 3 years with no fault in each area (higher is better). The tick is the fleet average for the same age.
Holds up better than average on body & structure, brakes, visibility.
Common questions
Is the BMW 420I M Sport Auto reliable?
On 2024 MOT data the BMW 420I M Sport Auto is about average for its age: 92% of examples aged up to 3 years pass first time, against a 89% fleet average. That puts it ahead of 73% of similar-age models.
What is the MOT pass rate for a BMW 420I M Sport Auto?
First-time MOT pass rates for the BMW 420I M Sport Auto in 2024: up to 3 years, 92%. Pass rates fall with age across the whole fleet, so compare each figure with cars of the same age, not with a new car.
What commonly fails on a BMW 420I M Sport Auto MOT?
No single area stands out as a recurring weakness for the BMW 420I M Sport Auto versus other cars of the same age — its MOT failures are spread across the usual wear items (tyres, brakes, lamps).