Diesel Mercedes-Benz C 320: MOT pass rate
70.3% of diesel Mercedes-Benz C 320s pass the MOT first time, measured across 728 DVSA tests on that fuel type alone. Average mileage at test was 122,371.
Diesel against the other Mercedes-Benz C 320 versions
| Fuel | Pass rate | Tests |
|---|---|---|
| Diesel | 70.3% | 728 |
| Petrol | 69.4% | 448 |
| All Mercedes-Benz C 320 | 70% | 1,176 |
Why the fuel type changes the number
Diesels carry DPFs, EGR valves and stricter smoke limits, so emissions and exhaust faults account for failures petrol cars never see.
On the Mercedes-Benz C 320 specifically, diesel is the strongest at 70.3%, and this diesel version sits 0.3 points above the 70% 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 diesel Mercedes-Benz C 320 had covered 122,371 miles at test, against 105,049 for the petrol. That is high mileage, so timing belts, clutches, suspension bushes and corrosion are the items worth budgeting for rather than the MOT itself.
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 C 320 page separate age from fuel if you want to isolate one.
Other Mercedes-Benz C 320 fuel types
- Petrol Mercedes-Benz C 320 - 69.4%