Triumph 1500 vs Triumph 2500 s auto: 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 2500 s auto
74%
MOT pass rate · 2,966 vehicles
Verdict: On MOT pass rate the Triumph 1500 (74%) and Triumph 2500 s auto (74%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Triumph 1500 | Triumph 2500 s auto |
|---|---|---|
| MOT pass rate | 74% | 74% |
| MOT failure rate | 26% | 26% |
| Faults & advisories per test | 2.3 | 1.9 ✓ |
| Dangerous-fault share | 0% | 0% |
| Average mileage | 58,068 mi | 61,155 mi |
| Sample size (vehicles) | 37,142 | 2,966 |
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 2500 s auto
- Parking brake: efficiency below requirements (3.7.B.7)
- Exhaust emissions carbon monoxide content excessive (7.3.B.1a)
- Nearside Front wheel bearing has slight play (2.5.A.3c)
- Offside Front wheel bearing has slight play (2.5.A.3c)
- Offside Rear wheel bearing has slight play (2.6.2)
- Rear Exhaust has a major leak of exhaust gases (7.1.2)
Reliability FAQ
On MOT pass rate the Triumph 1500 (74%) and Triumph 2500 s auto (74%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Triumph 1500 report Full Triumph 2500 s auto 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.