MG B reliability
MOT pass rates & common faults · 3,603 real DVSA tests · 2024
Across 3,603 real DVSA MOT tests in 2024, 83% of MG B cars aged 13 years and older pass their MOT first time — ahead of the 61% average for all cars of that age. It holds up especially well on tyres and suspension.
MOT pass rate by age
Where the B tends to fail
Share of MG B cars aged 13 years and older 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 tyres, suspension, identification.
Common questions
Is the MG B reliable?
On 2024 MOT data the MG B holds up well for its age: 83% of examples aged 13 years and older pass first time, against a 61% fleet average. That puts it ahead of 89% of similar-age models.
What is the MOT pass rate for a MG B?
First-time MOT pass rates for the MG B in 2024: 13 years and older, 83%. 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 MG B MOT?
No single area stands out as a recurring weakness for the MG B versus other cars of the same age — its MOT failures are spread across the usual wear items (tyres, brakes, lamps).