# BMW 420 MOT reliability: pass rate and common failures | RegFlags

The BMW 420 passes its MOT first time 82% of the time, from 61,591 MOT tests. See pass rates by year, common failures and typical mileage.

- First-time MOT pass rate: 82%
- MOT tests analysed: 61,591 (DVSA anonymised MOT data, 2025)
- Most common failure area: Wheels & tyres

## By year of first use and fuel

| Year | Fuel | MOT tests | First-time pass rate |
| --- | --- | --- | --- |
| 2023 | Petrol | 1 (very few mots) | 0% |
| 2022 | Petrol | 8 (very few mots) | 100% |
| 2022 | Diesel | 2 (very few mots) | 50% |
| 2022 | ED | 1 (very few mots) | 0% |
| 2021 | Petrol | 326 | 88% |
| 2021 | Diesel | 12 (very few mots) | 92% |
| 2020 | Petrol | 2,145 | 87% |
| 2020 | Diesel | 916 | 85% |
| 2019 | Petrol | 4,478 | 85% |
| 2019 | Diesel | 3,034 | 84% |
| 2018 | Diesel | 5,218 | 84% |
| 2018 | Petrol | 4,999 | 85% |
| 2017 | Diesel | 8,523 | 83% |
| 2017 | Petrol | 2,635 | 86% |
| 2016 | Diesel | 8,659 | 82% |
| 2016 | Petrol | 2,499 | 85% |
| 2015 | Diesel | 7,827 | 79% |
| 2015 | Petrol | 2,197 | 81% |
| 2014 | Diesel | 6,203 | 75% |
| 2014 | Petrol | 1,374 | 78% |
| 2013 | Diesel | 448 | 73% |
| 2013 | Petrol | 86 (few mots) | 70% |

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