ZONGSHEN ZS 125-50 RANGER
Pass rate over time
The ZS 125-50 RANGER's first-time pass rate has risen 12.2 points since 2014, 68.4% to 80.6%.
Pass rate by mileage
A low-mileage ZS 125-50 RANGER passes first time 77.5% of the time; by 20k that's 64.4%.
First-time pass rate by odometer reading at test, 10,000-mile bands for this model. Mileage is the strongest reliability signal. See the full curve.
What fails on a ZS 125-50 RANGER
| Component group | Share of defects | Defects | % of defects |
|---|---|---|---|
| lighting and signalling |
|
52 | 21.3 |
| drive system |
|
41 | 16.8 |
| brakes |
|
37 | 15.2 |
| lamps and reflectors |
|
35 | 14.3 |
| steering and suspension |
|
25 | 10.2 |
| structure and attachments |
|
20 | 8.2 |
| tyres and wheels |
|
15 | 6.1 |
| steering |
|
8 | 3.3 |
| suspension |
|
6 | 2.5 |
| tyres |
|
5 | 2 |
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 125-50 RANGER 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 125-50 RANGER.
Pass rate by registration year
Best year to buy used: 2011 (73.4% pass). Weakest: 2010 (64.0%).
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.