Smart (MCC) Forfour: reliability by registration year
2005-2022 · 10 registration years · 23,726 first tests
Registration years
First-attempt MOT results for every Forfour registration year with at least 500 first tests in 2025. Pass rates rise with newer cars, so read a year against its neighbours rather than against the top of the table. Years without their own report are listed here with the same figures.
| Year | First tests | First-attempt pass | Incl. PRS | Most common failure |
|---|---|---|---|---|
| 2022 | 565 | 89.0% | 92.4% | |
| 2021 | 583 | 82.7% | 87.5% | |
| 2020 | 600 | 84.2% | 87.5% | |
| 2019 | 1,880 | 80.9% | 85.5% | |
| 2018 | 3,687 | 79.6% | 84.6% | Tyre condition (front) 14.0% |
| 2017 | 4,586 | 75.7% | 80.7% | Tyre condition (front) 13.6% |
| 2016 | 5,053 | 70.5% | 76.4% | Petrol emissions (with catalyst) 17.1% |
| 2015 | 5,198 | 65.8% | 72.3% | Suspension arm ball joint (front) 15.9% |
| about 5 in every 100 worse than the years either side. What most often failed a 2015 Forfour: Suspension arm ball joint (front) (15.9%) · Petrol emissions (with catalyst) (14.6%) · Coil spring (front) (10.3%) | ||||
| 2006 | 801 | 54.7% | 64.7% | Individual sidelight or tail light (front) 14.6% |
| 2005 | 773 | 58.6% | 68.6% | |