Diesel Audi A5: MOT pass rate
78.6% of diesel Audi A5s pass the MOT first time, measured across 69,406 DVSA tests on that fuel type alone. Average mileage at test was 101,281.
Diesel against the other Audi A5 versions
| Fuel | Pass rate | Tests |
|---|---|---|
| Diesel | 78.6% | 69,406 |
| Petrol | 84% | 48,453 |
| All Audi A5 | 80.8% | 117,864 |
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 A5 specifically, petrol is the strongest at 84%, and this diesel version sits 2.2 points below the 80.8% model average.
What it means if you are buying one
The diesel Audi A5 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 A5 had covered 101,281 miles at test, against 67,827 for the petrol. That is above average and into the range where cambelts and water pumps are due if they have not already been done, so ask for the service history rather than take the mileage on trust.
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 A5 page separate age from fuel if you want to isolate one.
Other Audi A5 fuel types
- Petrol Audi A5 - 84%