MOT reliability
Triumph Stag auto
4,679 vehicles · 21,277 completed MOT tests analysed
77%
MOT pass rate
Based on 4,679 Triumph Stag auto vehicles and 21,277 completed MOT tests, the Triumph Stag auto has an overall 77% pass rate, with an average recorded mileage of 63,977 miles.
4,679
Vehicles
21,277
MOT tests
674
Avg miles / year
1.7
Faults per test
0%
Dangerous-fault share
Triumph Stag auto problem areas
Where faults occur most across all Triumph Stag auto MOT tests:
-
Other95%
-
Steering7%
-
Emissions & nuisance7%
-
Tyres, wheels & suspension6%
-
Brakes5%
-
Seatbelts & equipment3%
-
Lamps & electrical2%
-
Body & structure1%
Triumph Stag auto pass rate by age
| Age (years) | Tests | Pass rate |
|---|---|---|
| 3 | 2 | 50% |
| 4 | 2 | 50% |
| 5 | 1 | 100% |
| 6 | 1 | 100% |
| 8 | 2 | 50% |
| 9 | 1 | 100% |
| 10 | 1 | 100% |
| 11 | 1 | 100% |
| 12 | 1 | 100% |
| 13 | 1 | 100% |
| 14 | 2 | 50% |
| 15 | 3 | 67% |
| 16 | 2 | 100% |
| 17 | 2 | 100% |
| 18 | 1 | 100% |
| 19 | 2 | 100% |
Fuel types: Petrol (4,660), Other (16), LPG (2), Diesel (1)
Most common Triumph Stag auto MOT faults
These are the faults and advisories recorded most often across Triumph Stag auto MOT tests:
- Oil leak (1,011 times)
- Parking brake: efficiency below requirements (3.7.B.7) (551 times)
- Windscreen washer provides insufficient washer liquid (8.2.3) (542 times)
- Exhaust emissions carbon monoxide content excessive (7.3.B.1a) (489 times)
- Nearside Front wheel bearing has slight play (2.5.A.3c) (462 times)
- Oil leak, but not excessive (8.4.1 (a) (i)) (460 times)
- Offside Front wheel bearing has slight play (2.5.A.3c) (449 times)
- Steering column top bearing slightly worn (2.1.2c) (393 times)
- Offside Rear wheel bearing has slight play (2.6.2) (380 times)
- Nearside Rear wheel bearing has slight play (2.6.2) (343 times)
- Steering system has slight free play detected at steering wheel (2.2.A.1b) (335 times)
- Nearside Front Front wheel bearing has slight play (2.5.A.3c) (222 times)
- Exhaust has a minor leak of exhaust gases (7.1.2) (202 times)
- Nearside Stop lamp not working (1.2.1b) (189 times)
- Offside Front Front wheel bearing has slight play (2.5.A.3c) (188 times)
Triumph Stag auto pass rate by registration year
| Year | Vehicles | Tests | Pass rate | Avg mileage |
|---|---|---|---|---|
| 2003 | 1 | 20 | 80% | 74,351 |
| 1993 | 1 | 5 | 80% | — |
| 1979 | 1 | 7 | 86% | 22,771 |
| 1978 | 175 | 1,960 | 76% | 66,523 |
| 1977 | 332 | 3,453 | 77% | 68,161 |
| 1976 | 379 | 4,341 | 75% | 66,253 |
| 1975 | 314 | 3,073 | 77% | 61,296 |
| 1974 | 310 | 3,041 | 78% | 59,641 |
| 1973 | 370 | 3,619 | 78% | 63,214 |
| 1972 | 145 | 1,502 | 78% | 63,830 |
| 1971 | 34 | 229 | 73% | 64,784 |
Triumph Stag auto reliability FAQ
Across 4,679 Triumph Stag auto vehicles in our MOT data,
77% pass the MOT (a 23% failure rate), with about
1.7 faults or advisories recorded per test.
The most frequently recorded Triumph Stag auto MOT issues are:
Oil leak; Parking brake: efficiency below requirements (3.7.B.7); Windscreen washer provides insufficient washer liquid (8.2.3).
The typical Triumph Stag auto in our data has covered around
63,977 miles.
Compare the Triumph Stag auto
See how the Triumph Stag auto stacks up against other Triumph models on MOT reliability:
Check a specific Triumph Stag auto
Enter a registration to see that exact vehicle's full MOT history, advisories and recurring faults.
See all Triumph models · Learn about common MOT failures · what an MOT checks