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

The Mercedes-Benz SLC passed its MOT first time 75% of the time, but from only 16 MOT tests, so treat it as a rough guide. See pass rates by year, common failures and typical mileage.

- First-time MOT pass rate: 75%
- MOT tests analysed: 16 (DVSA anonymised MOT data, 2025)
- Most common failure area: Lights & electrics
- Licensed in Great Britain: 7,936 (2026 Q2)

These figures come from only 16 MOT tests. With so few cars, a single pass or fail changes the percentages a lot, so treat them as a rough guide rather than a true average.

## By year of first use and fuel

| Year | Fuel | MOT tests | First-time pass rate |
| --- | --- | --- | --- |
| 2017 | Petrol | 2 (very few mots) | 100% |
| 2017 | Diesel | 1 (very few mots) | 100% |
| 2016 | Petrol | 4 (very few mots) | 100% |
| 2016 | Diesel | 2 (very few mots) | 100% |
| 1980 | Petrol | 1 (very few mots) | 100% |
| 1979 | Petrol | 3 (very few mots) | 33% |
| 1977 | Petrol | 1 (very few mots) | 100% |
| 1974 | Petrol | 1 (very few mots) | 0% |
| 1971 | Petrol | 1 (very few mots) | 0% |

---

Canonical page: https://regflags.co.uk/reliability/mercedes/slc
RegFlags by Steady Circuit Ltd.