Diesel Smart (Mcc) Fortwo Coupe: MOT pass rate

68.1% of diesel Smart (Mcc) Fortwo Coupes pass the MOT first time, measured across 2,694 DVSA tests on that fuel type alone. Average mileage at test was 76,049.

Diesel against the other Smart (Mcc) Fortwo Coupe 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 Smart (Mcc) Fortwo Coupe specifically, petrol is the strongest at 72.1%, and this diesel version sits 3.4 points below the 71.5% model average.

What it means if you are buying one

The diesel Smart (Mcc) Fortwo Coupe 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 Smart (Mcc) Fortwo Coupe had covered 76,049 miles at test, against 65,024 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 Smart (Mcc) Fortwo Coupe page separate age from fuel if you want to isolate one.

Most common MOT failures on a diesel Smart (Mcc) Fortwo Coupe

1. An engine mounting/bracket severely damaged or deteriorated resulting in excessive movement, 1.5% of tests (44.88x the national rate for this defect)
2. Smoke opacity levels exceed the manufacturer's specified limit, 2.4% of tests (8.82x the national rate for this defect)
3. Significant brake effort recorded with no brake applied indicating a binding brake, 5.3% of tests (5.13x the national rate for this defect)
4. Brake pipe damaged or excessively corroded, 3.8% of tests (3.6x the national rate for this defect)
5. Engine MIL illuminated indicating a malfunction, 4.3% of tests (3.33x the national rate for this defect)
6. A spring or spring component fractured or seriously weakened, 7.5% of tests (3.29x the national rate for this defect)
7. The aim of a headlamp is not within limits laid down in the requirements, 4.8% of tests (2.05x the national rate for this defect)
8. A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning, 3.6% of tests (1.59x the national rate for this defect)
9. A suspension pin, bush or joint excessively worn, 7.7% of tests (1.52x the national rate for this defect)
10. A headlamp or light source missing, inoperative or more than ½ not functioning in the case of LED, 1.8% of tests (1.45x the national rate for this defect)

From 2,704 DVSA-tracked diesel Smart (Mcc) Fortwo Coupe tests, 2024, split out from the Smart (Mcc) Fortwo Coupe's other fuel types. DVSA testers marked 4.78% 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 Smart (Mcc) Fortwo Coupe

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

1. An engine mounting/bracket severely damaged or deteriorated resulting in excessive movement, 1.6% of tests (24.91x the national rate for this defect), also fails
2. Brake pipe damaged or excessively corroded, 21.3% of tests (3.45x the national rate for this defect), also fails
3. Significant brake effort recorded with no brake applied indicating a binding brake, 5.9% of tests (2.96x the national rate for this defect), also fails
4. A wheel badly distorted or wear between wheel and hub at spigot mounting, 2.7% of tests (2.49x the national rate for this defect)
5. Fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users, 9.8% of tests (1.77x the national rate for this defect)
6. A tyre seriously damaged, 19.6% of tests (1.27x the national rate for this defect)
7. A spring or spring component fractured or seriously weakened, 5.5% of tests (1.17x the national rate for this defect), also fails
8. Lamp emitted colour, position or intensity not in accordance with the requirements, 1.6% of tests (1.16x the national rate for this defect)
9. Tyre tread depth not in accordance with the requirements, 20.7% of tests
10. A suspension pin, bush or joint excessively worn, 11.6% of tests, also fails

From 2,704 DVSA-tracked diesel Smart (Mcc) Fortwo Coupe tests, 2024.

Other Smart (Mcc) Fortwo Coupe fuel types

• Petrol Smart (Mcc) Fortwo Coupe - 72.1%

All Smart (Mcc) Fortwo Coupe MOT data · Every model