Vauxhall Astra vs Mercedes-Benz C-Class: MOT reliability compared
Updated 05 September 2026.
22.4%
Mercedes-Benz C-Class MOT failure rate, 5.6 pts lower than Vauxhall Astra
Mercedes-Benz C-Class is the more reliable MOT performer: 22.4% of Mercedes-Benz C-Class MOTs fail versus 28.0% for Vauxhall Astra, a 5.6 point gap.
| Metric | Vauxhall Astra | Mercedes-Benz C-Class |
|---|---|---|
| MOT failure rate | 28.0% | 22.4% |
| Tests analysed | 25,662,553 | 8,209,994 |
| Most common failure | Suspension (33.3%) | Suspension (36.0%) |
Questions and answers
Which is more reliable, Vauxhall Astra or Mercedes-Benz C-Class?
Mercedes-Benz C-Class is the more reliable MOT performer: 22.4% of Mercedes-Benz C-Class MOTs fail versus 28.0% for Vauxhall Astra, a 5.6 point gap.
What is the MOT failure rate of the Vauxhall Astra?
28.0% of Vauxhall Astra MOT tests result in a failure, from 25,662,553 tests.
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.