Diesel Audi A1: MOT pass rate
72.1% of diesel Audi A1s pass the MOT first time, measured across 49,309 DVSA tests on that fuel type alone. Average mileage at test was 88,479.
Diesel against the other Audi A1 versions
| Fuel | Pass rate | Tests |
|---|---|---|
| Petrol | 82.1% | 163,012 |
| Diesel | 72.1% | 49,309 |
| All Audi A1 | 79.8% | 212,324 |
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 A1 specifically, petrol is the strongest at 82.1%, and this diesel version sits 7.7 points below the 79.8% model average.
What it means if you are buying one
The diesel Audi A1 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 Audi A1 had covered 88,479 miles at test, against 53,023 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 Audi A1 page separate age from fuel if you want to isolate one.
Other Audi A1 fuel types
- Petrol Audi A1 - 82.1%