SINNIS ZN 125

125cc Petrol Class 1

66.8%

first-time pass rate

28.8%

failed outright

3,854

median miles at test

184

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2021–2024

The ZN 125's first-time pass rate has fallen 4.4 points since 2021, 70.0% to 65.6%.

What fails on a ZN 125

failure defects by component group · advisories excluded

Component group	Defects	% of defects
lamps and reflectors	37	27
suspension	35	25.5
brakes	29	21.2
steering	12	8.8
tyres	11	8
structure and attachments	9	6.6
audible warning (Horn)	3	2.2
wheels	1	0.7

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 ZN 125 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 ZN 125.

Pass rate by registration year

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

Best year to buy used: 2018 (71.4% pass). Weakest: 2019 (64.5%).

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.