Jinlun JL 250-5 vs Yamaha WR250F

The Yamaha WR250F passes its MOT first time more often than the Jinlun JL 250-5: 78.0% vs 70.8%, a 7.2-point lead.

MOT reliability, side by side

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

Metric	Jinlun JL 250-5	Yamaha WR250F
First-time pass rate	70.8%	78.0%
Outright fail rate	17.9%	12.8%
Vs comparable bikes (age & mileage adjusted)	-17.9 pts	-10.7 pts
Engine size	234cc	249cc
Rank among all models	#4675 of 5428	#3913 of 5428
Median miles at test	4,068	3,018
MOT tests analysed	312	10,465
Most common failure	steering and suspension	lighting and signalling

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 250-5	Yamaha WR250F
2011	72.7%	76.7%
2012	72.7%	76.5%
2013	70.3%	75.7%
2014	55.9%	77.9%

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 250-5	Yamaha WR250F
0k-10k miles	73.6%	78.1%
10k-20k miles	64.1%	77.3%

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

JINLUN JL 250-5 70.8% pass · 312 tests YAMAHA WR250F 78.0% pass · 10.5k tests

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