Kawasaki ZX 600 R9F vs Yamaha FZS600

The Kawasaki ZX 600 R9F passes its MOT first time more often than the Yamaha FZS600: 84.8% vs 82.6%, a 2.2-point lead.

MOT reliability, side by side

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

Metric	Kawasaki ZX 600 R9F	Yamaha FZS600
First-time pass rate	84.8%	82.6%
Outright fail rate	6.4%	10.6%
Median miles at test	10,868	21,612
MOT tests analysed	2,079	136,558
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 ZX 600 R9F 84.8% pass · 2,079 tests YAMAHA FZS600 82.6% pass · 137k tests

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