Mercedes-benz C vs Mercedes-benz C300h: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Mercedes-benz C
78%
MOT pass rate · 675,043 vehicles
Mercedes-benz C300h
89%
MOT pass rate · 3 vehicles
Verdict: On MOT pass rate the Mercedes-benz C (78%) and Mercedes-benz C300h (89%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Mercedes-benz C | Mercedes-benz C300h |
|---|---|---|
| MOT pass rate | 78% | 89% ✓ |
| MOT failure rate | 22% | 11% ✓ |
| Faults & advisories per test | 1.7 | 1.2 ✓ |
| Dangerous-fault share | 3% ✓ | 9% |
| Average mileage | 112,156 mi | 66,180 mi |
| Sample size (vehicles) | 675,043 | 3 |
Most common faults
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)
Mercedes-benz C300h
- Rear Inner Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))
- Nearside Front tyre has slight wear inner edge
- Nearside Front Outer Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Offside Front Outer Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
- Rear Brake pad(s) less than 1.5 mm thick both side (1.1.13 (a) (ii))
- Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))
Reliability FAQ
On MOT pass rate the Mercedes-benz C (78%) and Mercedes-benz C300h (89%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Mercedes-benz C report Full Mercedes-benz C300h 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.