Triumph 1500 vs Triumph Alpha: 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 Alpha
67%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Triumph 1500 (74%) and Triumph Alpha (67%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Triumph 1500 | Triumph Alpha |
|---|---|---|
| MOT pass rate | 74% ✓ | 67% |
| MOT failure rate | 26% ✓ | 33% |
| Faults & advisories per test | 2.3 | 1.3 ✓ |
| Dangerous-fault share | 0% | 0% |
| Average mileage | 58,068 mi | 83,632 mi |
| Sample size (vehicles) | 37,142 | 1 |
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 Alpha
- Battery insecure (1.9.1)
- Horn not loud enough to be heard by another road user (1.6.2b)
- Rear Brakes imbalanced across an axle Axle 2 (3.7.B.5b)
- Steering component is not secure to the vehicle structure steering wheel lose (2.2.B.1a)
Reliability FAQ
On MOT pass rate the Triumph 1500 (74%) and Triumph Alpha (67%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Triumph 1500 report Full Triumph Alpha 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.