Triumph 1500 vs Triumph Speed twin-5t: 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 Speed twin-5t
100%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Triumph 1500 (74%) and Triumph Speed twin-5t (100%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Triumph 1500 | Triumph Speed twin-5t |
|---|---|---|
| MOT pass rate | 74% | 100% ✓ |
| MOT failure rate | 26% | 0% ✓ |
| Faults & advisories per test | 2.3 ✓ | 2.5 |
| Dangerous-fault share | 0% | 0% |
| Average mileage | 58,068 mi | 9,436 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 Speed twin-5t
- Front Steering headbearing has slight free play (2.2.2)
- Rear Rear wheel bearings have slight free play (2.4.A.2c)
- Front suspension assembly has slight free play between the sliding members (2.3.4)
- Rear wheel bearings have slight free play (2.4.A.2c)
- Steering headbearing has slight free play (2.2.2)
Reliability FAQ
On MOT pass rate the Triumph 1500 (74%) and Triumph Speed twin-5t (100%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Triumph 1500 report Full Triumph Speed twin-5t 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.