Kawasaki Ex 650 KJF vs Suzuki GSF600

The Kawasaki Ex 650 KJF passes its MOT first time more often than the Suzuki GSF600: 90.0% vs 77.3%, a 12.7-point lead.

MOT reliability, side by side

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

Metric	Kawasaki Ex 650 KJF	Suzuki GSF600
First-time pass rate	90.0%	77.3%
Outright fail rate	4.9%	14.2%
Median miles at test	7,242	21,080
MOT tests analysed	980	143,023
Most common failure	lamps and reflectors	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.

KAWASAKI EX 650 KJF 90.0% pass · 980 tests SUZUKI GSF600 77.3% pass · 143k tests

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