Petrol Mercedes-Benz 300: MOT pass rate
81.9% of petrol Mercedes-Benz 300s pass the MOT first time, measured across 2,254 DVSA tests on that fuel type alone. Average mileage at test was 107,424.
Petrol against the other Mercedes-Benz 300 versions
| Fuel | Pass rate | Tests |
|---|---|---|
| Petrol | 81.9% | 2,254 |
| Diesel | 76.1% | 522 |
| All Mercedes-Benz 300 | 80.9% | 2,789 |
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 300 specifically, petrol is the strongest at 81.9%, and this petrol version sits 1 points above the 80.9% model average.
What it means if you are buying one
The petrol Mercedes-Benz 300 is the stronger side of this model on MOT data. Still judge the individual car, but the fuel type is a mild point in its favour. 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 300 had covered 107,424 miles at test, against 147,671 for the diesel. That is above average and into the range where cambelts and water pumps are due if they have not already been done, so ask for the service history rather than take the mileage on trust.
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 300 page separate age from fuel if you want to isolate one.
Other Mercedes-Benz 300 fuel types
- Diesel Mercedes-Benz 300 - 76.1%