Smart Forfour vs Smart City: MOT reliability compared
Updated 05 September 2026.
26.8%
Smart Forfour MOT failure rate, 0.7 pts lower than Smart City
Smart Forfour is the more reliable MOT performer: 26.8% of Smart Forfour MOTs fail versus 27.5% for Smart City, a 0.7 point gap.
| Metric | Smart Forfour | Smart City |
|---|---|---|
| MOT failure rate | 26.8% | 27.5% |
| Tests analysed | 74,542 | 45,429 |
| Most common failure | Lamps & electrical (34.4%) | Lamps & electrical (41.8%) |
Questions and answers
Which is more reliable, Smart Forfour or Smart City?
Smart Forfour is the more reliable MOT performer: 26.8% of Smart Forfour MOTs fail versus 27.5% for Smart City, a 0.7 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 City?
27.5% of Smart City MOT tests result in a failure, from 45,429 tests.