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

YAMAHA CHAPPY

50cc Petrol Class 1
87.3%
first-time pass rate
6.8%
failed outright
5,116
median miles at test
237
MOT tests, 2005–2025

What fails on a CHAPPY

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lighting and signalling
24 37.5
steering and suspension
14 21.9
lamps and reflectors
8 12.5
tyres and wheels
6 9.4
suspension
4 6.2
drive system
3 4.7
brakes
2 3.1
steering
1 1.6
audible warning (Horn)
1 1.6
structure and attachments
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 CHAPPY 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 CHAPPY.