DERBI BOULEVARD
The pass rate is the MOT first-time pass: a roadworthiness check of the items an MOT covers (brakes, lights, tyres, steering, structure, emissions), not a full mechanical inspection of engine or gearbox internals. It is a reliability signal, not a complete measure of mechanical reliability. What this measures.
“vs expected” adjusts for age, mileage and test class, so a cherished classic and a hard-used commuter are compared fairly. How this works.
What fails on a BOULEVARD
| Component group | Share of defects | Defects | % of defects |
|---|---|---|---|
| lighting and signalling |
|
25 | 37.3 |
| steering and suspension |
|
11 | 16.4 |
| brakes |
|
10 | 14.9 |
| tyres and wheels |
|
9 | 13.4 |
| lamps and reflectors |
|
4 | 6 |
| fuel and exhaust |
|
4 | 6 |
| driving controls |
|
2 | 3 |
| steering |
|
1 | 1.5 |
| structure and attachments |
|
1 | 1.5 |
Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects.
Compare with any bike
More DERBI models
Embed this bike
Free to embed on your site, blog or forum — a live Derbi Boulevard reliability card that stays up to date and links back here. More on the free API page.