Mercedes-Benz C-Class vs Mercedes-Benz A-Class: MOT reliability compared
Updated 05 September 2026.
22.4%
Mercedes-Benz C-Class MOT failure rate, 0.1 pts lower than Mercedes-Benz A-Class
Mercedes-Benz C-Class is the more reliable MOT performer: 22.4% of Mercedes-Benz C-Class MOTs fail versus 22.5% for Mercedes-Benz A-Class, a 0.1 point gap.
| Metric | Mercedes-Benz C-Class | Mercedes-Benz A-Class |
|---|---|---|
| MOT failure rate | 22.4% | 22.5% |
| Tests analysed | 8,209,994 | 4,251,207 |
| Most common failure | Suspension (36.0%) | Lamps & electrical (28.8%) |
Questions and answers
Which is more reliable, Mercedes-Benz C-Class or Mercedes-Benz A-Class?
Mercedes-Benz C-Class is the more reliable MOT performer: 22.4% of Mercedes-Benz C-Class MOTs fail versus 22.5% for Mercedes-Benz A-Class, a 0.1 point gap.
What is the MOT failure rate of the Mercedes-Benz C-Class?
22.4% of Mercedes-Benz C-Class MOT tests result in a failure, from 8,209,994 tests.
What is the MOT failure rate of the Mercedes-Benz A-Class?
22.5% of Mercedes-Benz A-Class MOT tests result in a failure, from 4,251,207 tests.