Diesel Alfa Romeo GT: MOT pass rate

56.9% of diesel Alfa Romeo GTs pass the MOT first time, measured across 866 DVSA tests on that fuel type alone. Average mileage at test was 113,868.

Diesel against the other Alfa Romeo GT versions

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 Alfa Romeo GT specifically, petrol is the strongest at 66.9%, and this diesel version sits 4.5 points below the 61.4% model average.

What it means if you are buying one

The diesel Alfa Romeo GT 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. Buying a damaged one? run it through the analyzer, check the exact car, decode the VIN and check the mileage before you bid.

Mileage is part of the answer

The average diesel Alfa Romeo GT had covered 113,868 miles at test, against 87,851 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 Alfa Romeo GT page separate age from fuel if you want to isolate one.

Most common MOT failures on a diesel Alfa Romeo GT

1. The strength or continuity of the load bearing structure within 30cm of any seat belt anchorage (a 'prescribed area') is significantly reduced or inadequately repaired, 7.7% of tests (28.97x the national rate for this defect)
2. The strength or continuity of the load bearing structure within 30cm of any sub-frame, spring or suspension component mounting (a 'prescribed area') is significantly reduced or inadequately repaired, 15.7% of tests (16.63x the national rate for this defect)
3. Vehicle structure corroded to the extent that the rigidity of the assembly is seriously reduced, 6% of tests (14.59x the national rate for this defect)
4. Body, cab or chassis excessively corroded at a mounting point, 2.5% of tests (10.93x the national rate for this defect)
5. Smoke opacity levels exceed the manufacturer's specified limit, 2.7% of tests (10.18x the national rate for this defect)
6. The aim of a headlamp is not within limits laid down in the requirements, 11.9% of tests (5.08x the national rate for this defect)
7. Parking brake efficiency below minimum requirement, 6.1% of tests (4.72x the national rate for this defect)
8. Windscreen washers not working or not providing sufficient fluid to clear the windscreen, 6.7% of tests (3.98x the national rate for this defect)
9. A suspension pin, bush or joint excessively worn, 18% of tests (3.58x the national rate for this defect)
10. A tyre cords visible or damaged, 5.7% of tests (3.39x the national rate for this defect)

From 879 DVSA-tracked diesel Alfa Romeo GT tests, 2024, split out from the Alfa Romeo GT's other fuel types. DVSA testers marked 4.96% of these flagged defects as "dangerous", against 5.11% nationally. See which fuel type fails on the most dangerous defects nationally for how that compares across the whole fleet.

Most common MOT advisories on a diesel Alfa Romeo GT

Flagged but doesn't fail the car, a different list from the failures above.

1. Vehicle structure corroded to the extent that the rigidity of the assembly is seriously reduced, 7.3% of tests (5.85x the national rate for this defect), also fails
2. The strength or continuity of the load bearing structure within 30cm of any sub-frame, spring or suspension component mounting (a 'prescribed area') is significantly reduced or inadequately repaired, 7.2% of tests (4.72x the national rate for this defect), also fails
3. Exhaust system leaking or insecure, 12.9% of tests (4.52x the national rate for this defect)
4. A wheel badly distorted or wear between wheel and hub at spigot mounting, 3.6% of tests (3.41x the national rate for this defect)
5. Product on the lens or light source which obviously reduces light intensity or changes emitted colour to other than white or yellow, 3.6% of tests (3.29x the national rate for this defect)
6. A spring or spring component fractured or seriously weakened, 15.4% of tests (3.25x the national rate for this defect)
7. A suspension pin, bush or joint excessively worn, 34.6% of tests (2.59x the national rate for this defect), also fails
8. A suspension component excessively damaged or corroded, 13.4% of tests (2.59x the national rate for this defect)
9. Fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users, 10.9% of tests (1.96x the national rate for this defect)
10. Brake disc or drum excessively weakened, insecure or fractured, 20.8% of tests (1.7x the national rate for this defect)

From 879 DVSA-tracked diesel Alfa Romeo GT tests, 2024.

Other Alfa Romeo GT fuel types

• Petrol Alfa Romeo GT - 66.9%

All Alfa Romeo GT MOT data · Every model