BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/STANDARD MOTOR (SMC)
Make report · 2005–2025

STANDARD MOTOR (SMC)

65.5%
first-time pass rate
27.5%
failed outright
229
MOT tests, 2005–2025

What fails a STANDARD MOTOR (SMC)

failure defects across all STANDARD MOTOR (SMC) models · advisories excluded

lighting and signalling is STANDARD MOTOR (SMC)'s most common failure — 15.7% of all STANDARD MOTOR (SMC) tests record one.

Component groupShare of defects% of testsWorst offenders
lighting and signalling
15.7 see ranking
steering and suspension
11.4 see ranking
brakes
9.2 see ranking
fuel and exhaust
3.9 see ranking
lamps and reflectors
1.7 see ranking

Top failure groups aggregated across every STANDARD MOTOR (SMC) model, 2005–2025. "% of tests" = share of the make's tests recording at least one defect in that group.

STANDARD MOTOR (SMC) models, ranked by test volume

0 models with ≥ 100 normal tests, 2005–2025
Model Pass rate Pass % Fail % Median miles Tests

Normal tests only. Median miles is odometer reading at test where recorded. Source: DVSA anonymised MOT results, 2005–2025.