JIANSHE JS 125-6B

124cc Petrol Class 1

61.7%

first-time pass rate

26.7%

failed outright

9,778

median miles at test

MOT tests, 2005–2025

What fails on a JS 125-6B

failure defects by component group · advisories excluded

Component group	Defects	% of defects
lighting and signalling	12	27.3
brakes	6	13.6
structure and attachments	6	13.6
suspension	5	11.4
tyres and wheels	4	9.1
lamps and reflectors	3	6.8
tyres	3	6.8
steering	2	4.5
drive system	2	4.5
steering and suspension	1	2.3

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 JS 125-6B beats 0 of its 4 closest rivals (YAMAHA YBR 125, HONDA CG125, HONDA CBF125).

YAMAHA YBR 125 71.0% pass · 125k tests HONDA CG125 72.2% pass · 89.3k tests HONDA CBF125 73.3% pass · 84.4k tests GILERA RUNNER 70.8% pass · 69.9k tests

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 JS 125-6B.

Pass rate by registration year

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

Best year to buy used: 2013 (59.6% pass). Weakest: 2013 (59.6%).

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.