# Triumph Stag MOT reliability: pass rate and common failures | RegFlags

The Triumph Stag passes its MOT first time 82% of the time, from 1,243 MOT tests. See pass rates by year, common failures and typical mileage.

- First-time MOT pass rate: 82%
- MOT tests analysed: 1,243 (DVSA anonymised MOT data, 2025)
- Most common failure area: Lights & electrics
- Licensed in Great Britain: 5,915 (2026 Q2)

## By year of first use and fuel

| Year | Fuel | MOT tests | First-time pass rate |
| --- | --- | --- | --- |
| 2021 | Petrol | 1 (very few mots) | 100% |
| 2004 | Petrol | 1 (very few mots) | 100% |
| 2002 | Petrol | 1 (very few mots) | 100% |
| 1996 | Petrol | 1 (very few mots) | 100% |
| 1995 | Petrol | 1 (very few mots) | 0% |
| 1994 | Petrol | 2 (very few mots) | 100% |
| 1992 | Petrol | 1 (very few mots) | 0% |
| 1991 | Petrol | 1 (very few mots) | 100% |
| 1990 | Petrol | 1 (very few mots) | 100% |
| 1989 | Petrol | 2 (very few mots) | 100% |
| 1988 | Petrol | 2 (very few mots) | 0% |
| 1985 | Petrol | 1 (very few mots) | 100% |
| 1982 | Petrol | 2 (very few mots) | 50% |
| 1981 | Petrol | 2 (very few mots) | 100% |
| 1980 | Petrol | 2 (very few mots) | 50% |
| 1979 | Petrol | 3 (very few mots) | 100% |
| 1978 | Petrol | 63 (few mots) | 78% |
| 1977 | Petrol | 142 | 79% |
| 1977 | Electric | 1 (very few mots) | 0% |
| 1976 | Petrol | 180 | 81% |
| 1975 | Petrol | 139 | 84% |
| 1974 | Petrol | 199 | 81% |
| 1973 | Petrol | 227 | 86% |
| 1972 | Petrol | 184 | 82% |
| 1971 | Petrol | 70 (few mots) | 81% |
| 1970 | Petrol | 13 (very few mots) | 100% |
| 1969 | Petrol | 1 (very few mots) | 100% |

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