HONDA ST50

49cc Petrol Class 1

#2146 of 5426 overall #299 of 921 HONDAs #22 of 455 moped bikes

86.2%

first-time pass rate

6.7%

failed outright

4,979

median miles at test

492

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2017

The ST50's first-time pass rate has fallen 9.8 points since 2006, 87.2% to 77.4%.

What fails on a ST50

failure defects by component group · advisories excluded

Component group	Defects	% of defects
lighting and signalling	44	41.9
steering and suspension	14	13.3
tyres and wheels	10	9.5
body and structure	9	8.6
brakes	9	8.6
drive system	7	6.7
fuel and exhaust	5	4.8
reg plates and vin	3	2.9
lamps and reflectors	2	1.9
driving controls	2	1.9

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 ST50 beats 4 of its 4 closest rivals (PEUGEOT SPEEDFIGHT, PIAGGIO ZIP, PIAGGIO NRG).

PEUGEOT SPEEDFIGHT 65.2% pass · 83.7k tests PIAGGIO ZIP 71.3% pass · 79.0k tests PIAGGIO NRG 65.5% pass · 40.5k tests PEUGEOT VIVACITY 70.4% pass · 29.7k 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 ST50.

Pass rate by registration year

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

Best year to buy used: 1970 (89.9% pass). Weakest: 1971 (83.4%).

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.