BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ ZONGSHEN/ZS 125-30
Model report · 2005–2025

ZONGSHEN ZS 125-30

125cc Petrol Class 1
#5330 of 5426 overall #3 of 3 ZONGSHENs #689 of 734 commuter bikes
55.6%
first-time pass rate
29.8%
failed outright
7,002
median miles at test
329
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2011–2015

The ZS 125-30's first-time pass rate has fallen 20.3 points since 2011, 55.6% to 35.3%.

27%52%77%2011: 55.6% pass (45 tests)2012: 62.2% pass (45 tests)2013: 56.1% pass (41 tests)2014: 68.4% pass (38 tests)2015: 35.3% pass (34 tests)20112015

What fails on a ZS 125-30

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lighting and signalling
114 36.2
steering and suspension
45 14.3
brakes
44 14
lamps and reflectors
28 8.9
drive system
26 8.3
structure and attachments
20 6.3
tyres and wheels
12 3.8
body and structure
10 3.2
fuel and exhaust
9 2.9
suspension
7 2.2

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 125-30 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 125-30.

Pass rate by registration year

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

Best year to buy used: 2008 (55.5% pass). Weakest: 2009 (55.4%).

55%55%56%2008: 55.5% pass (236 tests)2009: 55.4% pass (56 tests)20082009

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.