Diesel MINI Roadster: MOT pass rate
80.3% of diesel MINI Roadsters pass the MOT first time, measured across 355 DVSA tests on that fuel type alone. Average mileage at test was 65,756.
Diesel against the other MINI Roadster versions
| Fuel | Pass rate | Tests |
|---|---|---|
| Petrol | 85.8% | 2,346 |
| Diesel | 80.3% | 355 |
| All MINI Roadster | 85.1% | 2,701 |
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 MINI Roadster specifically, petrol is the strongest at 85.8%, and this diesel version sits 4.8 points below the 85.1% model average.
What it means if you are buying one
The diesel MINI Roadster fails more often than the model average, so budget for the items that catch this fuel type and treat a fresh MOT as worth paying for. Check the exact car, decode the VIN and check the mileage before you bid.
Mileage is part of the answer
The average diesel MINI Roadster had covered 65,756 miles at test, against 51,087 for the petrol. That is a shade above the middle of the range, still ordinary wear rather than a red flag, but worth checking against the service book for the car's age.
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 MINI Roadster page separate age from fuel if you want to isolate one.
Other MINI Roadster fuel types
- Petrol MINI Roadster - 85.8%