Shineray XY 125 GY Viii vs Yamaha YBR 125

The Yamaha YBR 125 passes its MOT first time more often than the Shineray XY 125 GY Viii: 71.0% vs 60.6%, a 10.4-point lead.

MOT reliability, side by side

first-time pass rate, outright fail rate and tests analysed · 2005–2025

Metric	Shineray XY 125 GY Viii	Yamaha YBR 125
First-time pass rate	60.6%	71.0%
Outright fail rate	28.7%	17.1%
Vs comparable bikes (age & mileage adjusted)	-17.3 pts	-1.1 pts
Engine size	120cc	124cc
Rank among all models	#5191 of 5428	#4664 of 5428
Median miles at test	606	10,652
MOT tests analysed	289	124,897
Most common failure	lighting and signalling	brakes

First-time outcomes on normal tests, 2005–2025. "Most common failure" is the component group with the most recorded defects on failed tests. Read pass rates against test counts: a smaller sample is noisier. Source: DVSA anonymised MOT results.

"Vs comparable bikes" is the first-time pass rate minus the rate expected for each bike's own mix of age, mileage and test class, in percentage points: positive means better than comparable bikes. How this works.

Pass rate by test year

first-time MOT pass rate in each calendar year both bikes were tested

Test year	Shineray XY 125 GY Viii	Yamaha YBR 125
2011	47.5%	69.1%
2013	70.3%	69.5%
2014	52.6%	70.0%
2015	60.0%	71.2%
2016	61.3%	71.3%

Each year mixes bikes of different ages, so a fleet that is getting older tends to slip.

SHINERAY XY 125 GY VIII 60.6% pass · 289 tests YAMAHA YBR 125 71.0% pass · 125k tests

See each bike's full report (trend, mileage curve, failure breakdown and rivals) on its own page.