Kawasaki Ex 250 K9F vs Yamaha WR250F

The Yamaha WR250F passes its MOT first time more often than the Kawasaki Ex 250 K9F: 78.0% vs 76.6%, a 1.4-point lead.

MOT reliability, side by side

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

Metric	Kawasaki Ex 250 K9F	Yamaha WR250F
First-time pass rate	76.6%	78.0%
Outright fail rate	14.7%	12.8%
Median miles at test	9,510	3,018
MOT tests analysed	2,342	10,465
Most common failure	brakes	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.

KAWASAKI EX 250 K9F 76.6% pass · 2,342 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.