Shineray XY 125 GY vs Yamaha YBR 125

The Yamaha YBR 125 passes its MOT first time more often than the Shineray XY 125 GY: 71.0% vs 47.7%, a 23.3-point lead.

MOT reliability, side by side

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

Metric	Shineray XY 125 GY	Yamaha YBR 125
First-time pass rate	47.7%	71.0%
Outright fail rate	39.8%	17.1%
Vs comparable bikes (age & mileage adjusted)	-30.5 pts	-1.1 pts
Engine size	125cc	124cc
Rank among all models	#5409 of 5428	#4664 of 5428
Median miles at test	2,803	10,652
MOT tests analysed	778	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.

What fails, side by side

share of each bike's MOT tests that failed on the component · lower is better

Component	Shineray XY 125 GY	Yamaha YBR 125
Lights & signalling	28.8%	8.5%
Steering & suspension	26.7%	6.5%
Brakes	14.3%	5.9%
Tyres & wheels	12.3%	4.4%
Drive system	9.8%	2.9%
Structure & body	3.7%	3.8%
Fuel & exhaust	5.0%	0.6%

A test that fails on two components counts once in each. Component links go to the bikes most likely to fail on it.

Pass rate by test year

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

Test year	Shineray XY 125 GY	Yamaha YBR 125
2009	61.8%	70.7%
2010	40.4%	71.4%
2011	37.8%	69.1%
2012	52.2%	69.1%
2013	40.8%	69.5%
2014	42.4%	70.0%
2015	42.5%	71.2%
2016	55.4%	71.3%

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

Pass rate by mileage

first-time MOT pass rate by miles on the clock at test

Mileage	Shineray XY 125 GY	Yamaha YBR 125
0k-10k miles	47.6%	76.8%
10k-20k miles	47.4%	67.4%

Bands with fewer than 30 tests for either bike are left out.

Shineray XY 125 GY vs Yamaha YBR 125 FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Shineray XY 125 GY or the Yamaha YBR 125?

The Yamaha YBR 125 passes its MOT first time more often than the Shineray XY 125 GY: 71.0% vs 47.7%, a 23.3-point lead. Adjusted for age, mileage and test class, the Yamaha YBR 125 still comes out ahead: -30.5 points vs comparable bikes for the Shineray XY 125 GY, -1.1 for the Yamaha YBR 125. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Shineray XY 125 GY fail its MOT on most?

Lights & signalling: 28.8% of Shineray XY 125 GY MOT tests failed on it, then steering & suspension (26.7%).

What does the Yamaha YBR 125 fail its MOT on most?

Lights & signalling: 8.5% of Yamaha YBR 125 MOT tests failed on it, then steering & suspension (6.5%).

SHINERAY XY 125 GY 47.7% pass · 778 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.