# Mercedes-Benz 814 MOT reliability: pass rate and common failures | RegFlags

The Mercedes-Benz 814 passed its MOT first time 70% of the time, but from only 27 MOT tests, so treat it as a rough guide. See pass rates by year, common failures and typical mileage.

- First-time MOT pass rate: 70%
- MOT tests analysed: 27 (DVSA anonymised MOT data, 2025)
- Most common failure area: Suspension & axles

These figures come from 27 MOT tests. That's a fairly small number of cars, so they may not be typical of these cars as a whole.

## By year of first use and fuel

| Year | Fuel | MOT tests | First-time pass rate |
| --- | --- | --- | --- |
| 2004 | Diesel | 1 (very few mots) | 0% |
| 2002 | Diesel | 1 (very few mots) | 100% |
| 2001 | Diesel | 3 (very few mots) | 33% |
| 1999 | Diesel | 4 (very few mots) | 100% |
| 1998 | Diesel | 1 (very few mots) | 0% |
| 1997 | Diesel | 3 (very few mots) | 67% |
| 1995 | Diesel | 2 (very few mots) | 50% |
| 1994 | Diesel | 3 (very few mots) | 67% |
| 1993 | Diesel | 1 (very few mots) | 100% |
| 1991 | Diesel | 1 (very few mots) | 100% |
| 1990 | Diesel | 1 (very few mots) | 100% |
| 1989 | Diesel | 1 (very few mots) | 100% |
| 1988 | Diesel | 3 (very few mots) | 67% |
| 1987 | Diesel | 1 (very few mots) | 100% |
| 1986 | Diesel | 1 (very few mots) | 100% |

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