Jinlun JL 125 T-13 vs Yamaha YBR 125

The Yamaha YBR 125 passes its MOT first time more often than the Jinlun JL 125 T-13: 71.0% vs 54.8%, a 16.2-point lead.

MOT reliability, side by side

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

Metric	Jinlun JL 125 T-13	Yamaha YBR 125
First-time pass rate	54.8%	71.0%
Outright fail rate	40.1%	17.1%
Vs comparable bikes (age & mileage adjusted)	-21.4 pts	-1.1 pts
Engine size	125cc	124cc
Rank among all models	#5342 of 5428	#4664 of 5428
Median miles at test	4,538	10,652
MOT tests analysed	252	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	Jinlun JL 125 T-13	Yamaha YBR 125
2008	51.4%	71.1%
2009	59.2%	70.7%
2010	54.5%	71.4%
2011	64.1%	69.1%
2012	47.2%	69.1%

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	Jinlun JL 125 T-13	Yamaha YBR 125
0k-10k miles	57.1%	76.8%
10k-20k miles	42.5%	67.4%

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

JINLUN JL 125 T-13 54.8% pass · 252 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.