Pass rate over time
The ZS's first-time pass rate has risen 1.7 points since 2017, 66.7% to 68.4%.
What fails on a ZS
| Component group | Share of defects | Defects | % of defects |
|---|---|---|---|
| lamps and reflectors |
|
86 | 36.4 |
| structure and attachments |
|
47 | 19.9 |
| brakes |
|
25 | 10.6 |
| suspension |
|
15 | 6.4 |
| lighting and signalling |
|
14 | 5.9 |
| steering |
|
14 | 5.9 |
| audible warning (Horn) |
|
12 | 5.1 |
| drive system |
|
9 | 3.8 |
| steering and suspension |
|
8 | 3.4 |
| tyres |
|
6 | 2.5 |
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 ZS beats 0 of its 4 closest rivals (YAMAHA YBR 125, HONDA CG125, HONDA CBF125).
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 ZS.
Pass rate by registration year
Best year to buy used: 2016 (71.1% pass). Weakest: 2015 (68.2%).
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.