YIYING YY 50 QT-15-02

49cc Petrol Class 1

59.6%

first-time pass rate

28.8%

failed outright

2,436

median miles at test

146

MOT tests, 2005–2025

What fails on a YY 50 QT-15-02

failure defects by component group · advisories excluded

Component group	Defects	% of defects
lighting and signalling	54	41.2
brakes	26	19.8
tyres and wheels	13	9.9
steering and suspension	13	9.9
tyres	7	5.3
lamps and reflectors	6	4.6
body and structure	5	3.8
fuel and exhaust	4	3.1
suspension	2	1.5
reg plates and vin	1	0.8

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 YY 50 QT-15-02 beats 0 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 YY 50 QT-15-02.

Pass rate by registration year

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

Best year to buy used: 2007 (47.4% pass). Weakest: 2007 (47.4%).

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.