BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025

YAMAHA BW50

49cc Petrol Class 1
78.0%
first-time pass rate
16.0%
failed outright
7,167
median miles at test
150
MOT tests, 2005–2025

What fails on a BW50

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lighting and signalling
22 35.5
steering and suspension
13 21
brakes
7 11.3
tyres and wheels
6 9.7
fuel and exhaust
5 8.1
reg plates and vin
3 4.8
body and structure
3 4.8
lamps and reflectors
1 1.6
structure and attachments
1 1.6
Identification of the vehicle
1 1.6

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 BW50 beats 4 of its 4 closest rivals (PEUGEOT SPEEDFIGHT, PIAGGIO ZIP, PIAGGIO NRG).

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 BW50.