6 models · 283,852 MOT tests
Smart reliability
Smart cars fail 27.3% of first MOT tests (all cars: 28.4%), 12% more MOT fails than the average car its age and mileage. The most reliable Smart on MOT results is the Smart Roadster; the least is the Smart Forfour.
Ranked
Every Smart model, most reliable first
Ranked against cars of the same age and mileage, so a new model and an old one are judged fairly.
| # | Model | Type | Tests | Fail rate | Verdict |
|---|---|---|---|---|---|
| 1 | Smart Roadster1999–2011 cars | Sports car and convertible | 5,322 | 28.9% | Better than average |
| 2 | Smart Fortwo Cabriolet2000–2018 cars | City car | 14,865 | 33.5% | About average |
| 3 | Smart Fortwo Coupe1999–2020 cars | City car | 62,920 | 34.8% | About average |
| 4 | Smart Fortwo1999–2020 cars | City car | 102,211 | 20.8% | About average |
| 5 | Smart City Coupe1998–2018 cars | City car | 16,583 | 41.1% | Below average |
| 6 | Smart Forfour2001–2021 cars | City car | 81,951 | 25.6% | Well below average |
Compare across every brand in the UK MOT Reliability Index.
Questions
Smart reliability questions
Are Smart cars reliable?
Smart cars fail 27.3% of first MOT tests, 12% more MOT fails than the average car its age and mileage, across 283,852 UK MOT tests from 2022 to 2024.
What is the most reliable Smart?
On MOT results, the Smart Roadster: it fails 28.9% of first tests, 26% fewer MOT fails than the average car its age.
Which Smart should I avoid?
The Smart Forfour has the weakest MOT record of the Smart range (30% more MOT fails than the average car its age). Check any used one's MOT history before you buy.
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