Diesel Infiniti Q50: MOT pass rate
79.7% of diesel Infiniti Q50s pass the MOT first time, measured across 2,110 DVSA tests on that fuel type alone. Average mileage at test was 78,390.
Diesel against the other Infiniti Q50 versions
| Fuel | Pass rate | Tests |
|---|---|---|
| Diesel | 79.7% | 2,110 |
| Petrol | 86.3% | 204 |
| All Infiniti Q50 | 80.8% | 2,473 |
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 Infiniti Q50 specifically, petrol is the strongest at 86.3%, and this diesel version sits 1.1 points below the 80.8% model average.
What it means if you are buying one
The diesel Infiniti Q50 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 Infiniti Q50 had covered 78,390 miles at test, against 67,324 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 Infiniti Q50 page separate age from fuel if you want to isolate one.
Other Infiniti Q50 fuel types
- Petrol Infiniti Q50 - 86.3%