Diesel Toyota Yaris: MOT pass rate
70.8% of diesel Toyota Yaris pass the MOT first time, measured across 22,236 DVSA tests on that fuel type alone. Average mileage at test was 112,321.
Diesel against the other Toyota Yaris versions
| Fuel | Pass rate | Tests |
|---|---|---|
| Petrol | 77.3% | 318,331 |
| Hybrid | 87.7% | 85,118 |
| Diesel | 70.8% | 22,236 |
| Electric | 77.1% | 218 |
| All Toyota Yaris | 79% | 426,143 |
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 Toyota Yaris specifically, hybrid is the strongest at 87.7%, and this diesel version sits 8.2 points below the 79% model average.
What it means if you are buying one
The diesel Toyota Yaris 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 Toyota Yaris had covered 112,321 miles at test, against 71,902 for the petrol and 45,303 for the hybrid and 75,141 for the electric. That is high mileage, so timing belts, clutches, suspension bushes and corrosion are the items worth budgeting for rather than the MOT itself.
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 Toyota Yaris page separate age from fuel if you want to isolate one.
Other Toyota Yaris fuel types
- Petrol Toyota Yaris - 77.3%
- Hybrid Toyota Yaris - 87.7%
- Electric Toyota Yaris - 77.1%