WHITE KNUCKLE XY

124cc Petrol Class 1

#5419 of 5426 overall #4 of 4 WHITE KNUCKLEs #728 of 734 commuter bikes

45.6%

first-time pass rate

42.2%

failed outright

8,553

median miles at test

206

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2019–2021

The XY's first-time pass rate has risen 3.2 points since 2019, 42.5% to 45.7%.

What fails on a XY

failure defects by component group · advisories excluded

Component group	Defects	% of defects
lamps and reflectors	86	28.5
structure and attachments	55	18.2
brakes	35	11.6
suspension	32	10.6
lighting and signalling	29	9.6
steering and suspension	22	7.3
steering	15	5
tyres	13	4.3
drive system	8	2.6
body and structure	7	2.3

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 XY beats 0 of its 4 closest rivals (YAMAHA YBR 125, HONDA CG125, HONDA CBF125).

YAMAHA YBR 125 71.0% pass · 125k tests HONDA CG125 72.2% pass · 89.3k tests HONDA CBF125 73.3% pass · 84.4k tests GILERA RUNNER 70.8% pass · 69.9k 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 XY.

Pass rate by registration year

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

Best year to buy used: 2016 (49.3% pass). Weakest: 2016 (49.3%).

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.