Mercedes-benz 310d vs Mercedes-benz C: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Mercedes-benz 310d
59%
MOT pass rate · 5 vehicles
Mercedes-benz C
78%
MOT pass rate · 675,043 vehicles
Verdict: On MOT pass rate the Mercedes-benz 310d (59%) and Mercedes-benz C (78%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Mercedes-benz 310d | Mercedes-benz C |
|---|---|---|
| MOT pass rate | 59% | 78% ✓ |
| MOT failure rate | 41% | 22% ✓ |
| Faults & advisories per test | 3.8 | 1.7 ✓ |
| Dangerous-fault share | 1% ✓ | 3% |
| Average mileage | 243,619 mi | 112,156 mi |
| Sample size (vehicles) | 5 | 675,043 |
Most common faults
Mercedes-benz 310d
- Front Registration plate deteriorated but not likely to be misread (0.1 (b))
- Parking brake: efficiency below requirements (3.7.B.7)
- Exhaust has a minor leak of exhaust gases (7.1.2)
- Windscreen has damage to an area less than a 40mm circle outside zone 'A' (8.3.1d)
- Offside Front brake disc worn, pitted or scored, but not seriously weakened (3.5.1i)
- Nearside Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))
Mercedes-benz C
- Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
- Offside Rear Tyre worn close to the legal limit (4.1.E.1)
- Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Under-trays fitted obscuring some underside components
- Nearside Front Tyre worn close to the legal limit (4.1.E.1)
Reliability FAQ
On MOT pass rate the Mercedes-benz 310d (59%) and Mercedes-benz C (78%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Mercedes-benz 310d report Full Mercedes-benz C report Most reliable cars
Pass rates are computed over completed (pass/fail) MOT tests. Reliability also depends on age, mileage and upkeep — see each model's page for the full picture.