Triumph 1500 vs Triumph Triton: 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 Triton
92%
MOT pass rate · 60 vehicles
More reliable
Verdict: On MOT pass rate, the Triumph Triton is the more reliable of the two — 92% pass first time versus 74%. It's one signal among several; check the full breakdown below.
Head to head
| Measure | Triumph 1500 | Triumph Triton |
|---|---|---|
| MOT pass rate | 74% | 92% ✓ |
| MOT failure rate | 26% | 8% ✓ |
| Faults & advisories per test | 2.3 | 0.4 ✓ |
| Dangerous-fault share | 0% ✓ | 1% |
| Average mileage | 58,068 mi | 13,407 mi |
| Sample size (vehicles) | 37,142 | 60 |
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 Triton
- Front Roller brake test indicates slight fluctuation of brake effort (3.3.A1d)
- Rear wheel bearings have slight free play (2.4.A.2c)
- Rear Roller brake test indicates slight fluctuation of brake effort (3.3.A1d)
- Wheel alignment slightly misaligned. (2.5.1)
- Rear position lamp does not illuminate immediately when it is switched on (1.1.3a)
- Oil leak
Reliability FAQ
On MOT pass rate, the Triumph Triton is the more reliable of the two — 92% pass first time versus 74%. It's one signal among several; check the full breakdown below.
Full Triumph 1500 report Full Triumph Triton 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.