Triumph 1500 vs Triumph W: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Triumph 1500
74%
MOT pass rate · 37,142 vehicles
Triumph W
90%
MOT pass rate · 5 vehicles
Verdict: On MOT pass rate the Triumph 1500 (74%) and Triumph W (90%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Triumph 1500 | Triumph W |
|---|---|---|
| MOT pass rate | 74% | 90% ✓ |
| MOT failure rate | 26% | 10% ✓ |
| Faults & advisories per test | 2.3 | 1.2 ✓ |
| Dangerous-fault share | 0% | 0% |
| Average mileage | 58,068 mi | — |
| Sample size (vehicles) | 37,142 | 5 |
Most common faults
Triumph 1500
- Parking brake: efficiency below requirements (3.7.B.7)
- Windscreen washer provides insufficient washer liquid (8.2.3)
- Nearside Rear wheel bearing has slight play (2.6.2)
- Offside Rear wheel bearing has slight play (2.6.2)
- Brakes imbalanced across an axle (3.7.B.5b)
- Oil leak
Triumph W
- Front Roller brake test indicates slight fluctuation of brake effort (3.3.A1d)
- Rear Roller brake test indicates slight fluctuation of brake effort (3.3.A1d)
- Rear Wheel spoke slightly bent. (4.2.1b)
- Rear Wheel spoke slightly loose. (4.2.1b)
- Rear wheel bearings have slight free play (2.4.A.2c)
- Horn missing (1.7.1)
Reliability FAQ
On MOT pass rate the Triumph 1500 (74%) and Triumph W (90%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Triumph 1500 report Full Triumph W report Most reliable cars
Pass rates are computed over completed (pass/fail) MOT tests. Reliability also depends on age, mileage and upkeep — see each model's page for the full picture.