Triumph Bonneville vs Triumph Speed: MOT reliability compared
Updated 05 September 2026.
9.8%
Triumph Bonneville MOT failure rate, 2.6 pts lower than Triumph Speed
Triumph Bonneville is the more reliable MOT performer: 9.8% of Triumph Bonneville MOTs fail versus 12.4% for Triumph Speed, a 2.6 point gap.
| Metric | Triumph Bonneville | Triumph Speed |
|---|---|---|
| MOT failure rate | 9.8% | 12.4% |
| Tests analysed | 305,248 | 169,414 |
| Most common failure | Brakes (19.7%) | Lamps & electrical (20.6%) |
Questions and answers
Which is more reliable, Triumph Bonneville or Triumph Speed?
Triumph Bonneville is the more reliable MOT performer: 9.8% of Triumph Bonneville MOTs fail versus 12.4% for Triumph Speed, a 2.6 point gap.
What is the MOT failure rate of the Triumph Bonneville?
9.8% of Triumph Bonneville MOT tests result in a failure, from 305,248 tests.
What is the MOT failure rate of the Triumph Speed?
12.4% of Triumph Speed MOT tests result in a failure, from 169,414 tests.