Triumph 1500 vs Triumph Speed twin 900: 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 900
94%
MOT pass rate · 1,076 vehicles
More reliable
Verdict: On MOT pass rate, the Triumph Speed twin 900 is the more reliable of the two — 94% pass first time versus 74%. It's one signal among several; check the full breakdown below.
Head to head
| Measure | Triumph 1500 | Triumph Speed twin 900 |
|---|---|---|
| MOT pass rate | 74% | 94% ✓ |
| MOT failure rate | 26% | 6% ✓ |
| Faults & advisories per test | 2.3 | 0.2 ✓ |
| Dangerous-fault share | 0% ✓ | 2% |
| Average mileage | 58,068 mi | 4,551 mi |
| Sample size (vehicles) | 37,142 | 1,076 |
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 900
- Front Brake pad(s) close to minimum limit (1.1.13 (a))
- Front Brake indicates slight fluctuation of brake effort (1.2.1 (e))
- Headlamp aim too low (4.1.2 (a))
- Rear Brake pad(s) close to minimum limit (1.1.13 (a))
- Rear Tyre worn close to the legal limit (5.2.3 (e))
- Drive chain slightly loose (6.1.7 (c) (i))
Reliability FAQ
On MOT pass rate, the Triumph Speed twin 900 is the more reliable of the two — 94% pass first time versus 74%. It's one signal among several; check the full breakdown below.
Full Triumph 1500 report Full Triumph Speed twin 900 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.