Yamaha XJ600 vs Kawasaki ZX-6R

The Kawasaki ZX-6R passes its MOT first time more often than the Yamaha XJ600 — 78.1% vs 76.5%, a 1.6-point lead.

MOT reliability, side by side

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

Metric	Yamaha XJ600	Kawasaki ZX-6R
First-time pass rate	76.5%	78.1%
Outright fail rate	16.0%	14.0%
Median miles at test	24,197	19,446
MOT tests analysed	60,557	173,956
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.

YAMAHA XJ600 76.5% pass · 60.6k tests KAWASAKI ZX-6R 78.1% pass · 174k tests

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