HERALD MOTOR COMPANY SM 125-25B CLASSIC

124cc Petrol Class 1

69.4%

first-time pass rate

22.5%

failed outright

3,297

median miles at test

173

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2024–2025

The SM 125-25B CLASSIC's first-time pass rate has risen 1.9 points since 2024, 72.6% to 74.5%.

What fails on a SM 125-25B CLASSIC

failure defects by component group · advisories excluded

Component group	Defects	% of defects
brakes	47	43.1
lamps and reflectors	20	18.3
structure and attachments	19	17.4
steering	8	7.3
suspension	8	7.3
tyres	3	2.8
wheels	2	1.8
audible warning (Horn)	2	1.8

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 SM 125-25B CLASSIC 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 SM 125-25B CLASSIC.

Pass rate by registration year

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

Best year to buy used: 2021 (72.5% pass). Weakest: 2019 (60.9%).

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.