Diesel Mazda Bongo: MOT pass rate
55.3% of diesel Mazda Bongos pass the MOT first time, measured across 4,756 DVSA tests on that fuel type alone. Average mileage at test was 150,523.
Diesel against the other Mazda Bongo versions
| Fuel | Pass rate | Tests |
|---|---|---|
| Diesel | 55.3% | 4,756 |
| Petrol | 63.2% | 4,492 |
| All Mazda Bongo | 59.1% | 9,346 |
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 Mazda Bongo specifically, petrol is the strongest at 63.2%, and this diesel version sits 3.8 points below the 59.1% model average.
What it means if you are buying one
The diesel Mazda Bongo 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 Mazda Bongo had covered 150,523 miles at test, against 114,915 for the petrol. That is very high mileage. Clutches, dual-mass flywheels and head gaskets have usually been through at least one repair by this point, so ask for evidence rather than assume the car is original everywhere.
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 Mazda Bongo page separate age from fuel if you want to isolate one.
Other Mazda Bongo fuel types
- Petrol Mazda Bongo - 63.2%