Petrol Mercedes-Benz C: MOT pass rate

79.2% of petrol Mercedes-Benz Cs pass the MOT first time, measured across 126,387 DVSA tests on that fuel type alone. Average mileage at test was 76,080.

Petrol against the other Mercedes-Benz C versions

Why the fuel type changes the number

Petrol cars avoid the DPF and emissions failures that catch diesels, and usually fail on the same consumables as any other car.

On the Mercedes-Benz C specifically, hybrid is the strongest at 87.6%, and this petrol version sits 1.2 points above the 78% model average.

What it means if you are buying one

The petrol Mercedes-Benz C is the stronger side of this model on MOT data. Still judge the individual car, but the fuel type is a mild point in its favour. 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 petrol Mercedes-Benz C had covered 76,080 miles at test, against 95,767 for the diesel and 66,318 for the hybrid. 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 Mercedes-Benz C page separate age from fuel if you want to isolate one.

Most common MOT failures on a petrol Mercedes-Benz C

1. A suspension joint dust cover missing or no longer prevents the ingress of dirt etc, 3.6% of tests (1.96x the national rate for this defect)
2. Engine MIL illuminated indicating a malfunction, 2.3% of tests (1.8x the national rate for this defect)
3. Brake pipe damaged or excessively corroded, 1.9% of tests (1.78x the national rate for this defect)
4. A direction indicator lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning, 1.1% of tests (1.69x the national rate for this defect)
5. A suspension pin, bush or joint excessively worn, 6.5% of tests (1.3x the national rate for this defect)
6. A spring or spring component fractured or seriously weakened, 2.7% of tests (1.2x the national rate for this defect)
7. A tyre cords visible or damaged, 2% of tests (1.19x the national rate for this defect)
8. Tyre tread depth not in accordance with the requirements, 3.5% of tests
9. A tyre seriously damaged, 3.1% of tests
10. The aim of a headlamp is not within limits laid down in the requirements, 2% of tests

From 127,393 DVSA-tracked petrol Mercedes-Benz C tests, 2024, split out from the Mercedes-Benz C's other fuel types. DVSA testers marked 5.49% 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 petrol Mercedes-Benz C

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

1. A wheel bearing with excessive play, 3.8% of tests (5.92x the national rate for this defect)
2. A flexible brake hose excessively damaged, deteriorated, chafed, twisted or stretched, 2.7% of tests (4.81x the national rate for this defect)
3. Brake pipe damaged or excessively corroded, 13.9% of tests (2.25x the national rate for this defect), also fails
4. Brake disc or drum significantly and obviously worn, 4.1% of tests (1.29x the national rate for this defect)
5. A spring or spring component fractured or seriously weakened, 5.5% of tests (1.16x the national rate for this defect), also fails
6. Tyre tread depth not in accordance with the requirements, 27% of tests, also fails
7. A tyre seriously damaged, 13.3% of tests, also fails
8. A suspension pin, bush or joint excessively worn, 13.2% of tests, also fails
9. Brake disc or drum excessively weakened, insecure or fractured, 8.9% of tests
10. a brake lining or pad worn below 1.5mm, 8.5% of tests

From 127,393 DVSA-tracked petrol Mercedes-Benz C tests, 2024.

Other Mercedes-Benz C fuel types

• Diesel Mercedes-Benz C - 76.6%
• Hybrid Mercedes-Benz C - 87.6%

All Mercedes-Benz C MOT data · Every model