Diesel MG Zt: MOT pass rate
66% of diesel MG Zts pass the MOT first time, measured across 429 DVSA tests on that fuel type alone. Average mileage at test was 125,547.
Diesel against the other MG Zt versions
| Fuel | Pass rate | Tests |
|---|---|---|
| Petrol | 73.3% | 979 |
| Diesel | 66% | 429 |
| All MG Zt | 71.1% | 1,414 |
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 MG Zt specifically, petrol is the strongest at 73.3%, and this diesel version sits 5.1 points below the 71.1% model average.
What it means if you are buying one
The diesel MG Zt 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 MG Zt had covered 125,547 miles at test, against 86,603 for the petrol. 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 MG Zt page separate age from fuel if you want to isolate one.
Other MG Zt fuel types
- Petrol MG Zt - 73.3%