Diesel BMW X6: MOT pass rate

84.8% of diesel BMW X6s pass the MOT first time, measured across 12,869 DVSA tests on that fuel type alone. Average mileage at test was 86,394.

Diesel against the other BMW X6 versions

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 X6 specifically, petrol is the strongest at 85.8%, and this diesel version sits 0.1 points below the 84.9% 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. 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 X6 had covered 86,394 miles at test, against 61,275 for the petrol. That is above average, the point where suspension bushes, drop links and exhaust corrosion start showing up as advisories before they become failures.

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 X6 page separate age from fuel if you want to isolate one.

Most common MOT failures on a diesel BMW X6

1. Number plate does not conform to the specified requirements, 0.8% of tests (4.06x the national rate for this defect)
2. A wheel with a loose or missing wheel nut, bolt or stud, 0.8% of tests (2.7x the national rate for this defect)
3. A tyre cords visible or damaged, 3.5% of tests (2.06x the national rate for this defect)
4. A direction indicator lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning, 1.2% of tests (1.84x the national rate for this defect)
5. A suspension pin, bush or joint excessively worn, 2.9% of tests
6. A tyre seriously damaged, 2.7% of tests
7. Tyre tread depth not in accordance with the requirements, 2.4% of tests
8. A spring or spring component fractured or seriously weakened, 2.2% of tests
9. Windscreen washers not working or not providing sufficient fluid to clear the windscreen, 1.3% of tests
10. Engine MIL illuminated indicating a malfunction, 0.9% of tests

From 12,922 DVSA-tracked diesel BMW X6 tests, 2024, split out from the BMW X6's other fuel types. DVSA testers marked 6.67% 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 X6

Flagged but doesn't fail the car, a different list from the failures above.

1. Parking brake control missing, defective or inoperative, 0.5% of tests (8.65x the national rate for this defect)
2. A brake hose ferrule excessively corroded, 1.6% of tests (1.28x the national rate for this defect)
3. Tyre tread depth not in accordance with the requirements, 32.3% of tests (1.21x the national rate for this defect), also fails
4. Fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users, 6.5% of tests (1.18x the national rate for this defect)
5. A suspension pin, bush or joint excessively worn, 12.8% of tests, also fails
6. a brake lining or pad worn below 1.5mm, 7.6% of tests
7. A tyre seriously damaged, 7.3% of tests, also fails
8. Brake disc or drum excessively weakened, insecure or fractured, 6.1% of tests
9. Brake disc or drum significantly and obviously worn, 3% of tests
10. Number plate inscription missing or illegible, 1.2% of tests

From 12,922 DVSA-tracked diesel BMW X6 tests, 2024.

Other BMW X6 fuel types

• Petrol BMW X6 - 85.8%

All BMW X6 MOT data · Every model