HUSQVARNA SMS 4

124cc Petrol Class 1

57.9%

first-time pass rate

27.1%

failed outright

13,928

median miles at test

133

MOT tests, 2005–2025

Pass rate by mileage

how the SMS 4's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage SMS 4 passes first time 68.0% of the time; by 20k that's 48.4%.

First-time pass rate by odometer reading at test, 10,000-mile bands for this model. Mileage is the strongest reliability signal. See the full curve.

What fails on a SMS 4

failure defects by component group · advisories excluded

Component group	Defects	% of defects
lamps and reflectors	28	26.4
lighting and signalling	14	13.2
structure and attachments	12	11.3
brakes	12	11.3
steering and suspension	9	8.5
drive system	9	8.5
tyres and wheels	6	5.7
suspension	6	5.7
body and structure	5	4.7
tyres	5	4.7

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 SMS 4 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 SMS 4.

Pass rate by registration year

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

Best year to buy used: 2012 (56.6% pass). Weakest: 2012 (56.6%).

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.