WK BIKES GO 50 JJ 50 QT-3

50cc Petrol Class 1

68.3%

first-time pass rate

20.1%

failed outright

4,168

median miles at test

139

MOT tests, 2005–2025

What fails on a GO 50 JJ 50 QT-3

failure defects by component group · advisories excluded

Component group	Defects	% of defects
lighting and signalling	22	29.3
steering and suspension	11	14.7
tyres and wheels	10	13.3
brakes	9	12
fuel and exhaust	7	9.3
lamps and reflectors	5	6.7
steering	5	6.7
body and structure	3	4
structure and attachments	2	2.7
suspension	1	1.3

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 GO 50 JJ 50 QT-3 beats 2 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 GO 50 JJ 50 QT-3.

Pass rate by registration year

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

Best year to buy used: 2012 (71.3% pass). Weakest: 2013 (64.4%).

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.