Triumph Street vs Triumph Thunderbird: MOT reliability compared
Updated 05 September 2026.
9.9%
Triumph Street MOT failure rate, 0.8 pts lower than Triumph Thunderbird
Triumph Street is the more reliable MOT performer: 9.9% of Triumph Street MOTs fail versus 10.7% for Triumph Thunderbird, a 0.8 point gap.
| Metric | Triumph Street | Triumph Thunderbird |
|---|---|---|
| MOT failure rate | 9.9% | 10.7% |
| Tests analysed | 119,782 | 81,236 |
| Most common failure | Lamps & electrical (21.9%) | Brakes (21.2%) |
Questions and answers
Which is more reliable, Triumph Street or Triumph Thunderbird?
Triumph Street is the more reliable MOT performer: 9.9% of Triumph Street MOTs fail versus 10.7% for Triumph Thunderbird, a 0.8 point gap.
What is the MOT failure rate of the Triumph Street?
9.9% of Triumph Street MOT tests result in a failure, from 119,782 tests.
What is the MOT failure rate of the Triumph Thunderbird?
10.7% of Triumph Thunderbird MOT tests result in a failure, from 81,236 tests.