Gilera 600 vs Yamaha FZS600

The Yamaha FZS600 passes its MOT first time more often than the Gilera 600 — 82.6% vs 66.7%, a 15.9-point lead.

MOT reliability, side by side

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

Metric	Gilera 600	Yamaha FZS600
First-time pass rate	66.7%	82.6%
Outright fail rate	16.7%	10.6%
Median miles at test	30,333	21,612
MOT tests analysed	156	136,558
Most common failure	lighting and signalling	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.

GILERA 600 66.7% pass · 156 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.