# Mercedes-Benz C300 MOT reliability: pass rate and common failures | RegFlags

The Mercedes-Benz C300 passes its MOT first time 87% of the time, from 173 MOT tests. See pass rates by year, common failures and typical mileage.

- First-time MOT pass rate: 87%
- MOT tests analysed: 173 (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 | Hybrid | 7 (very few mots) | 86% |
| 2022 | Hybrid | 62 (few mots) | 89% |
| 2022 | Petrol | 1 (very few mots) | 100% |
| 2021 | Hybrid | 84 (few mots) | 88% |
| 2021 | Petrol | 1 (very few mots) | 100% |
| 2020 | Hybrid | 1 (very few mots) | 0% |
| 2020 | Petrol | 1 (very few mots) | 100% |
| 2019 | Petrol | 7 (very few mots) | 86% |
| 2018 | Petrol | 1 (very few mots) | 100% |
| 2016 | ED | 1 (very few mots) | 100% |
| 2016 | Petrol | 1 (very few mots) | 100% |
| 2015 | ED | 2 (very few mots) | 50% |
| 2014 | Diesel | 1 (very few mots) | 100% |
| 2012 | Petrol | 1 (very few mots) | 100% |
| 2011 | Petrol | 2 (very few mots) | 50% |

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