BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025

ZONGSHEN ZS

124cc Petrol Class 1
#4851 of 5426 overall #2 of 3 ZONGSHENs #441 of 734 commuter bikes
68.0%
first-time pass rate
21.1%
failed outright
7,114
median miles at test
375
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2017–2023

The ZS's first-time pass rate has risen 1.7 points since 2017, 66.7% to 68.4%.

53%68%83%2017: 66.7% pass (42 tests)2018: 78.3% pass (46 tests)2019: 70.6% pass (51 tests)2020: 69.6% pass (46 tests)2021: 58.2% pass (55 tests)2022: 72.2% pass (54 tests)2023: 68.4% pass (38 tests)20172023

What fails on a ZS

failure defects by component group · advisories excluded
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

same type, similar capacity, high test volume

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

how each model-year cohort fares · registration year from first use date

Best year to buy used: 2016 (71.1% pass). Weakest: 2015 (68.2%).

67%70%72%2014: 69.8% pass (96 tests)2015: 68.2% pass (107 tests)2016: 71.1% pass (83 tests)201420152016

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.