SUZUKI GSF600S vs YAMAHA FZS600

The YAMAHA FZS600 passes its MOT first time more often than the SUZUKI GSF600S — 82.6% vs 78.4%, a 4.2-point lead.

MOT reliability, side by side

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

Metric	SUZUKI GSF600S	YAMAHA FZS600
First-time pass rate	78.4%	82.6%
Outright fail rate	13.6%	10.6%
Median miles at test	19,671	21,612
MOT tests analysed	66,871	136,558
Most common failure	brakes	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.

SUZUKI GSF600S 78.4% pass · 66.9k 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.