Diesel SEAT Arona: MOT pass rate
82.4% of diesel SEAT Aronas pass the MOT first time, measured across 5,245 DVSA tests on that fuel type alone. Average mileage at test was 45,793.
Diesel against the other SEAT Arona versions
| Fuel | Pass rate | Tests |
|---|---|---|
| Petrol | 87.5% | 35,710 |
| Diesel | 82.4% | 5,245 |
| All SEAT Arona | 86.9% | 40,955 |
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 SEAT Arona specifically, petrol is the strongest at 87.5%, and this diesel version sits 4.5 points below the 86.9% model average.
What it means if you are buying one
The diesel SEAT Arona 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 SEAT Arona had covered 45,793 miles at test, against 32,901 for the petrol. That is below average for a car this age, worth a mileage-consistency check since an unusually low reading is sometimes clocking rather than luck.
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 SEAT Arona page separate age from fuel if you want to isolate one.
Other SEAT Arona fuel types
- Petrol SEAT Arona - 87.5%