Triumph 120 vs Triumph 1500: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Triumph 120
96%
MOT pass rate · 5 vehicles
Triumph 1500
74%
MOT pass rate · 37,142 vehicles
Verdict: On MOT pass rate the Triumph 120 (96%) and Triumph 1500 (74%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Triumph 120 | Triumph 1500 |
|---|---|---|
| MOT pass rate | 96% ✓ | 74% |
| MOT failure rate | 4% ✓ | 26% |
| Faults & advisories per test | 0.4 ✓ | 2.3 |
| Dangerous-fault share | 0% | 0% |
| Average mileage | 22,851 mi | 58,068 mi |
| Sample size (vehicles) | 5 | 37,142 |
Most common faults
Triumph 120
- Rear wheel bearings have slight free play (2.4.A.2c)
- Wheel alignment slightly misaligned. (2.5.1)
- Rear Roller brake test indicates slight fluctuation of brake effort (3.3.A1d)
- Rear Wheel spoke cracked. (4.2.1b)
- Rear Tyre worn close to the legal limit (4.1.3(ii))
- Offside Front shock absorber has light misting of stanchion (2.3.3)
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
Reliability FAQ
On MOT pass rate the Triumph 120 (96%) and Triumph 1500 (74%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Triumph 120 report Full Triumph 1500 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.