BRANSON BK 50

50cc Petrol Class 1

79.8%

first-time pass rate

10.1%

failed outright

587

median miles at test

119

MOT tests, 2005–2025

What fails on a BK 50

failure defects by component group · advisories excluded

Component group	Defects	% of defects
lighting and signalling	16	41
structure and attachments	4	10.3
steering and suspension	4	10.3
brakes	4	10.3
Identification of the vehicle	3	7.7
lamps and reflectors	3	7.7
wheels	2	5.1
drive system	1	2.6
body and structure	1	2.6
audible warning (Horn)	1	2.6

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 BK 50 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 BK 50.