Smart Roadster vs Smart (Mcc) Cabriolet: MOT reliability compared
Updated 05 September 2026.
25.6%
Smart Roadster MOT failure rate, 1.7 pts lower than Smart (Mcc) Cabriolet
Smart Roadster is the more reliable MOT performer: 25.6% of Smart Roadster MOTs fail versus 27.3% for Smart (Mcc) Cabriolet, a 1.7 point gap.
| Metric | Smart Roadster | Smart (Mcc) Cabriolet |
|---|---|---|
| MOT failure rate | 25.6% | 27.3% |
| Tests analysed | 77,228 | 38,430 |
| Most common failure | Lamps & electrical (41.7%) | Lamps & electrical (41.1%) |
Questions and answers
Which is more reliable, Smart Roadster or Smart (Mcc) Cabriolet?
Smart Roadster is the more reliable MOT performer: 25.6% of Smart Roadster MOTs fail versus 27.3% for Smart (Mcc) Cabriolet, a 1.7 point gap.
What is the MOT failure rate of the Smart Roadster?
25.6% of Smart Roadster MOT tests result in a failure, from 77,228 tests.
What is the MOT failure rate of the Smart (Mcc) Cabriolet?
27.3% of Smart (Mcc) Cabriolet MOT tests result in a failure, from 38,430 tests.