Ford Mustang — reliability by registration year
2016–2022 · 7 registration years · 16,133 first tests
2021
breaks the run — 2.0 pp better than the years either side
Registration years
First-attempt MOT results for every Mustang 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.
| Year | First tests | First-attempt pass | Incl. PRS | Most common failure |
|---|---|---|---|---|
| 2022 | 4,819 | 89.4% | 92.1% | Tyres — Condition (front) 23.2% |
| 2021 | 3,007 | 90.1% | 91.7% | Tyres — Condition (front) 29.1% |
| 2.0 pp better than the years either side What failed 2021 Mustangs most often: Tyres — Condition (front) (29.1%) · Tread depth (rear) (20.4%) | ||||
| 2020 | 1,015 | 86.6% | 88.5% | |
| 2019 | 1,145 | 84.8% | 86.5% | Rbt (sp) 39.1% |
| 2018 | 1,982 | 83.1% | 85.4% | Rbt (sp) 35.8% |
| 2017 | 1,781 | 81.8% | 83.8% | Rbt (sp) 27.8% |
| 2016 | 2,384 | 81.2% | 83.0% | Rbt (sp) 26.5% |