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

The Mercedes-Benz Motor passes its MOT first time 69% of the time, from 392 MOT tests. See pass rates by year, common failures and typical mileage.

- First-time MOT pass rate: 69%
- MOT tests analysed: 392 (DVSA anonymised MOT data, 2025)
- Most common failure area: Lights & electrics

## By year of first use and fuel

| Year | Fuel | MOT tests | First-time pass rate |
| --- | --- | --- | --- |
| 2012 | Diesel | 8 (very few mots) | 88% |
| 2011 | Diesel | 6 (very few mots) | 100% |
| 2010 | Diesel | 7 (very few mots) | 86% |
| 2009 | Diesel | 18 (very few mots) | 78% |
| 2008 | Diesel | 22 (few mots) | 77% |
| 2007 | Diesel | 21 (few mots) | 76% |
| 2006 | Diesel | 21 (few mots) | 71% |
| 2005 | Diesel | 30 (few mots) | 73% |
| 2004 | Diesel | 29 (few mots) | 79% |
| 2003 | Diesel | 45 (few mots) | 60% |
| 2003 | Petrol | 2 (very few mots) | 50% |
| 2002 | Diesel | 43 (few mots) | 61% |
| 2001 | Diesel | 20 (few mots) | 60% |
| 2001 | Petrol | 1 (very few mots) | 100% |
| 2000 | Diesel | 5 (very few mots) | 60% |
| 2000 | Petrol | 1 (very few mots) | 0% |
| 1999 | Diesel | 16 (very few mots) | 81% |
| 1998 | Diesel | 9 (very few mots) | 56% |
| 1997 | Diesel | 4 (very few mots) | 75% |
| 1996 | Diesel | 3 (very few mots) | 33% |
| 1995 | Diesel | 3 (very few mots) | 33% |
| 1994 | Diesel | 6 (very few mots) | 67% |
| 1993 | Diesel | 10 (very few mots) | 80% |
| 1992 | Diesel | 4 (very few mots) | 75% |
| 1991 | Diesel | 3 (very few mots) | 67% |
| 1990 | Diesel | 12 (very few mots) | 58% |
| 1989 | Diesel | 20 (few mots) | 55% |
| 1988 | Diesel | 9 (very few mots) | 67% |
| 1988 | Petrol | 2 (very few mots) | 50% |
| 1987 | Diesel | 4 (very few mots) | 50% |
| 1986 | Diesel | 4 (very few mots) | 75% |
| 1985 | Diesel | 4 (very few mots) | 75% |

---

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