TRIUMPH BONNEVILLE STREET TWIN
Pass rate over time
The BONNEVILLE STREET TWIN's first-time pass rate has fallen 1.7 points since 2024, 94.3% to 92.6%.
What fails on a BONNEVILLE STREET TWIN
| Component group | Share of defects | Defects | % of defects | vs all bikes |
|---|---|---|---|---|
| lamps and reflectors |
|
7 | 35 | 0.6× |
| brakes |
|
4 | 20 | 0.2× |
| tyres |
|
4 | 20 | 0.9× |
| structure and attachments |
|
3 | 15 | 0.7× |
| Identification of the vehicle |
|
1 | 5 | 0.7× |
| audible warning (Horn) |
|
1 | 5 | 0.9× |
Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects. "vs all bikes" is how often this model's tests record a defect in the group, as a multiple of the all-bike rate.
How rivals compare
On first-time pass rate the BONNEVILLE STREET TWIN beats 4 of its 4 closest rivals (TRIUMPH BONNEVILLE, TRIUMPH THUNDERBIRD, HARLEY-DAVIDSON XLH 883).
Rivals share this bike's type and sit within ±30% of its engine capacity, ≥ 5,000 tests. Card colour = better/worse first-time pass rate than the BONNEVILLE STREET TWIN.
Pass rate by registration year
Best year to buy used: 2021 (94.6% pass). Weakest: 2022 (92.0%).
First-time pass rate by the year each bike was first registered (cohorts with ≥ 50 tests). Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years.
TRIUMPH BONNEVILLE STREET TWIN FAQ
Is the TRIUMPH BONNEVILLE STREET TWIN reliable?
The TRIUMPH BONNEVILLE STREET TWIN is more reliable than average for its class: 93.1% of its 619 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #278 of 5426 models.
What does a BONNEVILLE STREET TWIN fail its MOT on most?
lamps and reflectors — 35% of all defects recorded against failed BONNEVILLE STREET TWIN tests.