BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ SKYTEAM/ST 125 SM
Model report · 2005–2025

SKYTEAM ST 125 SM

124cc Petrol Class 1
49.0%
first-time pass rate
37.8%
failed outright
4,640
median miles at test
143
MOT tests, 2005–2025

What fails on a ST 125 SM

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lighting and signalling
80 36.9
steering and suspension
59 27.2
brakes
35 16.1
drive system
13 6
reg plates and vin
10 4.6
body and structure
7 3.2
tyres and wheels
6 2.8
fuel and exhaust
3 1.4
lamps and reflectors
2 0.9
driving controls
2 0.9

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 ST 125 SM 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 ST 125 SM.

Pass rate by registration year

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

Best year to buy used: 2005 (41.1% pass). Weakest: 2005 (41.1%).

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.