Smart Fortwo vs Smart Roadster: MOT reliability compared
Updated 05 September 2026.
22.1%
Smart Fortwo MOT failure rate, 3.5 pts lower than Smart Roadster
Smart Fortwo is the more reliable MOT performer: 22.1% of Smart Fortwo MOTs fail versus 25.6% for Smart Roadster, a 3.5 point gap.
| Metric | Smart Fortwo | Smart Roadster |
|---|---|---|
| MOT failure rate | 22.1% | 25.6% |
| Tests analysed | 132,208 | 77,228 |
| Most common failure | Lamps & electrical (27.6%) | Lamps & electrical (41.7%) |
Questions and answers
Which is more reliable, Smart Fortwo or Smart Roadster?
Smart Fortwo is the more reliable MOT performer: 22.1% of Smart Fortwo MOTs fail versus 25.6% for Smart Roadster, a 3.5 point gap.
What is the MOT failure rate of the Smart Fortwo?
22.1% of Smart Fortwo MOT tests result in a failure, from 132,208 tests.
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.