Pass rate over time
The STORM 50's first-time pass rate has risen 3.0 points since 2011, 75.0% to 78.0%.
What fails on a STORM 50
| Component group | Share of defects | Defects | % of defects |
|---|---|---|---|
| lighting and signalling |
|
63 | 46.7 |
| brakes |
|
25 | 18.5 |
| steering and suspension |
|
24 | 17.8 |
| tyres and wheels |
|
7 | 5.2 |
| fuel and exhaust |
|
4 | 3 |
| lamps and reflectors |
|
4 | 3 |
| reg plates and vin |
|
3 | 2.2 |
| body and structure |
|
2 | 1.5 |
| driving controls |
|
2 | 1.5 |
| suspension |
|
1 | 0.7 |
Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects.
How rivals compare
On first-time pass rate the STORM 50 beats 4 of its 4 closest rivals (PEUGEOT SPEEDFIGHT, PIAGGIO ZIP, PIAGGIO NRG).
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 STORM 50.
Pass rate by registration year
Best year to buy used: 2008 (75.9% pass). Weakest: 2007 (71.1%).
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.