# Mercedes-Benz B MOT reliability: pass rate and common failures | RegFlags

The Mercedes-Benz B passes its MOT first time 90% of the time, from 9,973 MOT tests. See pass rates by year, common failures and typical mileage.

- First-time MOT pass rate: 90%
- MOT tests analysed: 9,973 (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 |
| --- | --- | --- | --- |
| 2024 | Petrol | 1 (very few mots) | 100% |
| 2023 | Diesel | 21 (few mots) | 100% |
| 2023 | Hybrid | 11 (very few mots) | 100% |
| 2023 | Petrol | 5 (very few mots) | 100% |
| 2022 | Petrol | 850 | 92% |
| 2022 | Diesel | 338 | 89% |
| 2022 | Hybrid | 124 | 92% |
| 2021 | Petrol | 938 | 92% |
| 2021 | Diesel | 542 | 93% |
| 2021 | Hybrid | 330 | 90% |
| 2020 | Petrol | 1,750 | 91% |
| 2020 | Diesel | 1,073 | 90% |
| 2020 | Hybrid | 82 (few mots) | 88% |
| 2019 | Petrol | 2,282 | 90% |
| 2019 | Diesel | 1,424 | 88% |
| 2018 | Petrol | 52 (few mots) | 83% |
| 2018 | Diesel | 20 (few mots) | 75% |
| 2017 | Diesel | 6 (very few mots) | 50% |
| 2017 | Petrol | 4 (very few mots) | 75% |
| 2016 | Petrol | 6 (very few mots) | 100% |
| 2016 | Diesel | 2 (very few mots) | 50% |
| 2015 | Diesel | 10 (very few mots) | 80% |
| 2015 | Petrol | 8 (very few mots) | 100% |
| 2014 | Petrol | 9 (very few mots) | 100% |
| 2014 | Diesel | 8 (very few mots) | 50% |
| 2013 | Petrol | 16 (very few mots) | 100% |
| 2013 | Diesel | 5 (very few mots) | 60% |
| 2012 | Petrol | 23 (few mots) | 78% |
| 2012 | Diesel | 2 (very few mots) | 100% |
| 2011 | Petrol | 5 (very few mots) | 40% |
| 2010 | Petrol | 7 (very few mots) | 71% |
| 2010 | Diesel | 4 (very few mots) | 100% |
| 2009 | Diesel | 4 (very few mots) | 50% |
| 2009 | Petrol | 3 (very few mots) | 100% |
| 2008 | Diesel | 2 (very few mots) | 100% |
| 2007 | Petrol | 3 (very few mots) | 67% |
| 2005 | Petrol | 2 (very few mots) | 50% |
| 2005 | Diesel | 1 (very few mots) | 0% |

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