Triumph 1500 vs Triumph Rocket iii roadster trike: 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 Rocket iii roadster trike
92%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Triumph 1500 (74%) and Triumph Rocket iii roadster trike (92%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Triumph 1500 | Triumph Rocket iii roadster trike |
|---|---|---|
| MOT pass rate | 74% | 92% ✓ |
| MOT failure rate | 26% | 8% ✓ |
| Faults & advisories per test | 2.3 | 0.5 ✓ |
| Dangerous-fault share | 0% | 0% |
| Average mileage | 58,068 mi | 22,115 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 Rocket iii roadster trike
- Nearside Front Brake pad(s) close to minimum limit (3.2A1f(ii))
- Offside Front Brake pad(s) close to minimum limit (3.2A1f(ii))
- Nearside Rear Front mudguard insecure Cap bolts loose. (2.3.7)
- Offside Front Front wheel spindle securing nut(s) loose Pinch cap bolts loose. (2.3.5a)
- Nearside Front Brake pad(s) close to minimum limit (1.1.13 (a))
- Offside Front Brake pad(s) close to minimum limit (1.1.13 (a))
Reliability FAQ
On MOT pass rate the Triumph 1500 (74%) and Triumph Rocket iii roadster trike (92%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Triumph 1500 report Full Triumph Rocket iii roadster trike 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.