Petrol Mercedes-Benz B: MOT pass rate
92.6% of petrol Mercedes-Benz Bs pass the MOT first time, measured across 4,792 DVSA tests on that fuel type alone. Average mileage at test was 25,056.
Petrol against the other Mercedes-Benz B versions
| Fuel | Pass rate | Tests |
|---|---|---|
| Petrol | 92.6% | 4,792 |
| Diesel | 91.5% | 3,098 |
| All Mercedes-Benz B | 92.2% | 7,891 |
Why the fuel type changes the number
Petrol cars avoid the DPF and emissions failures that catch diesels, and usually fail on the same consumables as any other car.
On the Mercedes-Benz B specifically, petrol is the strongest at 92.6%, and this petrol version sits 0.4 points above the 92.2% model average.
What it means if you are buying one
There is little to choose between fuel types on this model, so decide on running costs and mileage rather than MOT record. Check the exact car, decode the VIN and check the mileage before you bid.
Mileage is part of the answer
The average petrol Mercedes-Benz B had covered 25,056 miles at test, against 30,697 for the diesel. That is low mileage, which usually means light urban use. Short journeys are harder on batteries, brakes and exhausts than motorway miles, so do not assume low miles means low wear.
Fuel type and mileage are tangled together: diesels are usually bought by higher-mileage drivers, so some of any gap between fuels is the miles rather than the engine. The per-year figures on the Mercedes-Benz B page separate age from fuel if you want to isolate one.
Other Mercedes-Benz B fuel types
- Diesel Mercedes-Benz B - 91.5%