Suzuki GS 500 K5 vs Yamaha FZ6

The Yamaha FZ6 passes its MOT first time more often than the Suzuki GS 500 K5: 85.2% vs 80.8%, a 4.4-point lead.

MOT reliability, side by side

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

Metric	Suzuki GS 500 K5	Yamaha FZ6
First-time pass rate	80.8%	85.2%
Outright fail rate	10.7%	7.8%
Median miles at test	16,992	15,484
MOT tests analysed	1,422	67,149
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 GS 500 K5 80.8% pass · 1,422 tests YAMAHA FZ6 85.2% pass · 67.1k tests

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