Suzuki GS550 vs Kawasaki ZX-6R

The Kawasaki ZX-6R passes its MOT first time more often than the Suzuki GS550: 78.1% vs 77.3%, a 0.8-point lead.

MOT reliability, side by side

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

Metric	Suzuki GS550	Kawasaki ZX-6R
First-time pass rate	77.3%	78.1%
Outright fail rate	14.1%	14.0%
Median miles at test	29,795	19,446
MOT tests analysed	4,838	173,956
Most common failure	lighting and signalling	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.

SUZUKI GS550 77.3% pass · 4,838 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.