Pass rate over time
The ZSA's first-time pass rate has risen 19.3 points since 2018, 34.5% to 53.8%.
What fails on a ZSA
| Component group | Share of defects | Defects | % of defects |
|---|---|---|---|
| lamps and reflectors |
|
337 | 41.3 |
| structure and attachments |
|
174 | 21.3 |
| brakes |
|
97 | 11.9 |
| suspension |
|
72 | 8.8 |
| steering |
|
62 | 7.6 |
| tyres |
|
34 | 4.2 |
| audible warning (Horn) |
|
20 | 2.5 |
| lighting and signalling |
|
13 | 1.6 |
| Identification of the vehicle |
|
4 | 0.5 |
| steering and suspension |
|
3 | 0.4 |
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 ZSA beats 0 of its 4 closest rivals (PIAGGIO VESPA, HONDA PCX 125, HONDA Vision 110).
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 ZSA.
Pass rate by registration year
Best year to buy used: 2016 (51.4% pass). Weakest: 2015 (43.9%).
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.