Diesel MINI One: MOT pass rate
83.3% of diesel MINI Ones pass the MOT first time, measured across 5,506 DVSA tests on that fuel type alone. Average mileage at test was 74,634.
Diesel against the other MINI One versions
| Fuel | Pass rate | Tests |
|---|---|---|
| Petrol | 85.3% | 43,768 |
| Diesel | 83.3% | 5,506 |
| All MINI One | 85.1% | 49,274 |
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 One specifically, petrol is the strongest at 85.3%, and this diesel version sits 1.8 points below the 85.1% model average.
What it means if you are buying one
The diesel MINI One 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. Buying a damaged one? run it through the analyzer, check the exact car, decode the VIN and check the mileage before you bid.
Mileage is part of the answer
The average diesel MINI One had covered 74,634 miles at test, against 55,707 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 One page separate age from fuel if you want to isolate one.
Most common MOT failures on a diesel MINI One
- A tyre pressure monitoring system malfunctioning or obviously inoperative, 0.7% of tests (2.53x the national rate for this defect)
- Engine MIL illuminated indicating a malfunction, 2.4% of tests (1.89x the national rate for this defect)
- Wiper blade missing or obviously not clearing the windscreen, 2.2% of tests (1.17x the national rate for this defect)
- Tyre tread depth not in accordance with the requirements, 3% of tests
- A tyre seriously damaged, 2.7% of tests
- a brake lining or pad worn below 1.5mm, 2.2% of tests
- A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning, 1.7% of tests
- Windscreen washers not working or not providing sufficient fluid to clear the windscreen, 1.6% of tests
- A tyre cords visible or damaged, 1.3% of tests
- The aim of a headlamp is not within limits laid down in the requirements, 1% of tests
From 5,494 DVSA-tracked diesel MINI One tests, 2024, split out from the MINI One's other fuel types. DVSA testers marked 6.24% of these flagged defects as "dangerous", against 5.11% nationally. See which fuel type fails on the most dangerous defects nationally for how that compares across the whole fleet.
Most common MOT advisories on a diesel MINI One
Flagged but doesn't fail the car, a different list from the failures above.
- Tyre tread depth not in accordance with the requirements, 28.5% of tests, also fails
- A tyre seriously damaged, 17.5% of tests, also fails
- Brake disc or drum excessively weakened, insecure or fractured, 9.8% of tests
- a brake lining or pad worn below 1.5mm, 9.2% of tests, also fails
- A suspension pin, bush or joint excessively worn, 6.1% of tests
- Brake disc or drum significantly and obviously worn, 3.2% of tests
- Fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users, 2.4% of tests
- A spring or spring component fractured or seriously weakened, 2.1% of tests
- Significant brake effort recorded with no brake applied indicating a binding brake, 1.7% of tests
- A suspension component excessively damaged or corroded, 1.6% of tests
From 5,494 DVSA-tracked diesel MINI One tests, 2024.
Other MINI One fuel types
- Petrol MINI One - 85.3%