Triumph Speed vs Triumph Stag: MOT reliability compared
Updated 05 September 2026.
12.4%
Triumph Speed MOT failure rate, 10.2 pts lower than Triumph Stag
Triumph Speed is the more reliable MOT performer: 12.4% of Triumph Speed MOTs fail versus 22.6% for Triumph Stag, a 10.2 point gap.
| Metric | Triumph Speed | Triumph Stag |
|---|---|---|
| MOT failure rate | 12.4% | 22.6% |
| Tests analysed | 169,414 | 87,808 |
| Most common failure | Lamps & electrical (20.6%) | Lamps & electrical (40.6%) |
Questions and answers
Which is more reliable, Triumph Speed or Triumph Stag?
Triumph Speed is the more reliable MOT performer: 12.4% of Triumph Speed MOTs fail versus 22.6% for Triumph Stag, a 10.2 point gap.
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.
What is the MOT failure rate of the Triumph Stag?
22.6% of Triumph Stag MOT tests result in a failure, from 87,808 tests.