Smart Forfour vs Smart (Mcc) Cabriolet: MOT reliability compared
Updated 05 September 2026.
26.8%
Smart Forfour MOT failure rate, 0.5 pts lower than Smart (Mcc) Cabriolet
Smart Forfour is the more reliable MOT performer: 26.8% of Smart Forfour MOTs fail versus 27.3% for Smart (Mcc) Cabriolet, a 0.5 point gap.
| Metric | Smart Forfour | Smart (Mcc) Cabriolet |
|---|---|---|
| MOT failure rate | 26.8% | 27.3% |
| Tests analysed | 74,542 | 38,430 |
| Most common failure | Lamps & electrical (34.4%) | Lamps & electrical (41.1%) |
Questions and answers
Which is more reliable, Smart Forfour or Smart (Mcc) Cabriolet?
Smart Forfour is the more reliable MOT performer: 26.8% of Smart Forfour MOTs fail versus 27.3% for Smart (Mcc) Cabriolet, a 0.5 point gap.
What is the MOT failure rate of the Smart Forfour?
26.8% of Smart Forfour MOT tests result in a failure, from 74,542 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.