# Triumph TR4A MOT reliability: pass rate and common failures | RegFlags

The Triumph TR4A passes its MOT first time 88% of the time, from 169 MOT tests. See pass rates by year, common failures and typical mileage.

- First-time MOT pass rate: 88%
- MOT tests analysed: 169 (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 |
| --- | --- | --- | --- |
| 2015 | Petrol | 1 (very few mots) | 100% |
| 2009 | Petrol | 1 (very few mots) | 100% |
| 2006 | Petrol | 1 (very few mots) | 100% |
| 2005 | Petrol | 1 (very few mots) | 100% |
| 2001 | Petrol | 1 (very few mots) | 100% |
| 1996 | Petrol | 1 (very few mots) | 100% |
| 1995 | Petrol | 1 (very few mots) | 0% |
| 1994 | Petrol | 4 (very few mots) | 100% |
| 1992 | Petrol | 2 (very few mots) | 100% |
| 1991 | Petrol | 4 (very few mots) | 75% |
| 1990 | Petrol | 2 (very few mots) | 100% |
| 1989 | Petrol | 1 (very few mots) | 100% |
| 1988 | Petrol | 1 (very few mots) | 0% |
| 1982 | Petrol | 1 (very few mots) | 100% |
| 1980 | Petrol | 2 (very few mots) | 100% |
| 1979 | Petrol | 1 (very few mots) | 100% |
| 1968 | Petrol | 4 (very few mots) | 100% |
| 1967 | Petrol | 56 (few mots) | 88% |
| 1966 | Petrol | 51 (few mots) | 82% |
| 1965 | Petrol | 33 (few mots) | 94% |

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