Mercedes-Benz 300 reliability
MOT pass rates & common faults · 7,410 real DVSA tests · 2024
Across 7,410 real DVSA MOT tests in 2024, 77% of Mercedes-Benz 300 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 300 tends to fail
Share of Mercedes-Benz 300 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 Mercedes-Benz 300 reliable?
On 2024 MOT data the Mercedes-Benz 300 holds up well for its age: 77% of examples aged 13 years and older pass first time, against a 61% fleet average. That puts it ahead of 80% of similar-age models.
What is the MOT pass rate for a Mercedes-Benz 300?
First-time MOT pass rates for the Mercedes-Benz 300 in 2024: 13 years and older, 77%. 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 Mercedes-Benz 300 MOT?
No single area stands out as a recurring weakness for the Mercedes-Benz 300 versus other cars of the same age — its MOT failures are spread across the usual wear items (tyres, brakes, lamps).