Mercedes-benz A-class vs Mercedes-benz C 250 cgi: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Mercedes-benz A-class
78%
MOT pass rate · 362,612 vehicles
Mercedes-benz C 250 cgi
76%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Mercedes-benz A-class (78%) and Mercedes-benz C 250 cgi (76%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Mercedes-benz A-class | Mercedes-benz C 250 cgi |
|---|---|---|
| MOT pass rate | 78% ✓ | 76% |
| MOT failure rate | 22% ✓ | 24% |
| Faults & advisories per test | 1.6 | 1.4 ✓ |
| Dangerous-fault share | 3% ✓ | 8% |
| Average mileage | 86,210 mi | 157,038 mi |
| Sample size (vehicles) | 362,612 | 1 |
Most common faults
Mercedes-benz A-class
- Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Nearside Front Tyre worn close to the legal limit (4.1.E.1)
- Under-trays fitted obscuring some underside components
- Offside Front Tyre worn close to the legal limit (4.1.E.1)
- Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
Mercedes-benz C 250 cgi
- Vehicles internal headlight adjuster altered to recheck lights
- Oil leak, but not excessive engine - recommend further investigation / repair as necessary (8.4.1 (a) (i))
- Oil leak, but not excessive (8.4.1 (a) (i))
- Engine covers fitted obscuring some components in the engine bay
- Front Brake pad(s) wearing thin (3.5.1g)
- Front brake disc worn, pitted or scored, but not seriously weakened (3.5.1i)
Reliability FAQ
On MOT pass rate the Mercedes-benz A-class (78%) and Mercedes-benz C 250 cgi (76%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Mercedes-benz A-class report Full Mercedes-benz C 250 cgi 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.