Triumph 1500 vs Triumph Bonneville 750: 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 Bonneville 750
86%
MOT pass rate · 105 vehicles
More reliable
Verdict: On MOT pass rate, the Triumph Bonneville 750 is the more reliable of the two — 86% pass first time versus 74%. It's one signal among several; check the full breakdown below.
Head to head
| Measure | Triumph 1500 | Triumph Bonneville 750 |
|---|---|---|
| MOT pass rate | 74% | 86% ✓ |
| MOT failure rate | 26% | 14% ✓ |
| Faults & advisories per test | 2.3 | 0.4 ✓ |
| Dangerous-fault share | 0% | 0% |
| Average mileage | 58,068 mi | 24,187 mi |
| Sample size (vehicles) | 37,142 | 105 |
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 Bonneville 750
- Rear Roller brake test indicates slight fluctuation of brake effort (3.3.A1d)
- Rear Tyre worn close to the legal limit (4.1.3(ii))
- Drive chain worn but not considered excessive (6.2.1e)
- Drive chain slightly loose (6.2.1d)
- Wheel alignment slightly misaligned. (2.5.1)
- Rear Drive chain sprocket slightly worn (6.2.1e)
Reliability FAQ
On MOT pass rate, the Triumph Bonneville 750 is the more reliable of the two — 86% pass first time versus 74%. It's one signal among several; check the full breakdown below.
Full Triumph 1500 report Full Triumph Bonneville 750 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.