Diesel BMW X1: MOT pass rate
83% of diesel BMW X1s pass the MOT first time, measured across 71,633 DVSA tests on that fuel type alone. Average mileage at test was 75,982.
Diesel against the other BMW X1 versions
| Fuel | Pass rate | Tests |
|---|---|---|
| Diesel | 83% | 71,633 |
| Petrol | 91.3% | 32,799 |
| All BMW X1 | 85.6% | 104,439 |
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 BMW X1 specifically, petrol is the strongest at 91.3%, and this diesel version sits 2.6 points below the 85.6% model average.
What it means if you are buying one
The diesel BMW X1 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 BMW X1 had covered 75,982 miles at test, against 35,675 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 BMW X1 page separate age from fuel if you want to isolate one.
Most common MOT failures on a diesel BMW X1
- A tyre cords visible or damaged, 2.2% of tests (1.3x the national rate for this defect)
- A tyre seriously damaged, 3.3% of tests (1.17x the national rate for this defect)
- A suspension pin, bush or joint excessively worn, 4.9% of tests
- Tyre tread depth not in accordance with the requirements, 3.1% of tests
- Windscreen washers not working or not providing sufficient fluid to clear the windscreen, 1.7% of tests
- a brake lining or pad worn below 1.5mm, 1.7% of tests
- The aim of a headlamp is not within limits laid down in the requirements, 1.2% of tests
- A spring or spring component fractured or seriously weakened, 1.1% of tests
- A shock absorber damaged to the extent that it does not function or showing signs of severe leakage, 0.9% of tests
- Wiper blade missing or obviously not clearing the windscreen, 0.8% of tests
From 71,856 DVSA-tracked diesel BMW X1 tests, 2024, split out from the BMW X1's other fuel types. DVSA testers marked 6.6% 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 BMW X1
Flagged but doesn't fail the car, a different list from the failures above.
- Tyre tread depth not in accordance with the requirements, 31.4% of tests (1.18x the national rate for this defect), also fails
- A tyre seriously damaged, 12.8% of tests, also fails
- A suspension pin, bush or joint excessively worn, 12.6% of tests, also fails
- a brake lining or pad worn below 1.5mm, 9.9% of tests, also fails
- Brake disc or drum excessively weakened, insecure or fractured, 7.6% of tests
- Brake pipe damaged or excessively corroded, 3.7% of tests
- Brake disc or drum significantly and obviously worn, 2.8% of tests
- A shock absorber damaged to the extent that it does not function or showing signs of severe leakage, 2% of tests, also fails
- A suspension component excessively damaged or corroded, 1.8% of tests
- Fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users, 1.7% of tests
From 71,856 DVSA-tracked diesel BMW X1 tests, 2024.
Other BMW X1 fuel types
- Petrol BMW X1 - 91.3%