Diesel Audi Q3: MOT pass rate

81.1% of diesel Audi Q3s pass the MOT first time, measured across 63,653 DVSA tests on that fuel type alone. Average mileage at test was 78,442.

Diesel against the other Audi Q3 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 Audi Q3 specifically, petrol is the strongest at 88%, and this diesel version sits 2.7 points below the 83.8% model average.

What it means if you are buying one

The diesel Audi Q3 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 Audi Q3 had covered 78,442 miles at test, against 50,670 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 Audi Q3 page separate age from fuel if you want to isolate one.

Most common MOT failures on a diesel Audi Q3

1. A spring or spring component fractured or seriously weakened, 6.1% of tests (2.67x the national rate for this defect)
2. A suspension component excessively damaged or corroded, 0.9% of tests (2.53x the national rate for this defect)
3. Tyre tread depth not in accordance with the requirements, 4.4% of tests (1.36x the national rate for this defect)
4. A suspension pin, bush or joint excessively worn, 3.7% of tests
5. A tyre seriously damaged, 2.5% of tests
6. a brake lining or pad worn below 1.5mm, 1.8% of tests
7. A tyre cords visible or damaged, 1.6% of tests
8. Engine MIL illuminated indicating a malfunction, 1.4% of tests
9. Wiper blade missing or obviously not clearing the windscreen, 1.4% of tests
10. Brake disc or drum significantly and obviously worn, 0.9% of tests

From 63,864 DVSA-tracked diesel Audi Q3 tests, 2024, split out from the Audi Q3's other fuel types. DVSA testers marked 5.87% 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 Audi Q3

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

1. A suspension component excessively damaged or corroded, 9.4% of tests (1.81x the national rate for this defect), also fails
2. Brake disc or drum excessively weakened, insecure or fractured, 19.7% of tests (1.61x the national rate for this defect)
3. A shock absorber damaged to the extent that it does not function or showing signs of severe leakage, 5.5% of tests (1.42x the national rate for this defect)
4. Tyre tread depth not in accordance with the requirements, 32.8% of tests (1.23x the national rate for this defect), also fails
5. a brake lining or pad worn below 1.5mm, 11.1% of tests (1.18x the national rate for this defect), also fails
6. A suspension pin, bush or joint excessively worn, 15.7% of tests (1.17x the national rate for this defect), also fails
7. A tyre seriously damaged, 14.4% of tests, also fails
8. Brake disc or drum significantly and obviously worn, 3.4% of tests, also fails
9. A spring or spring component fractured or seriously weakened, 2.7% of tests, also fails
10. Number plate inscription missing or illegible, 2.1% of tests

From 63,864 DVSA-tracked diesel Audi Q3 tests, 2024.

Other Audi Q3 fuel types

• Petrol Audi Q3 - 88%

All Audi Q3 MOT data · Every model