MZ 500R vs Yamaha FZ6

The MZ 500R passes its MOT first time more often than the Yamaha FZ6 — 90.4% vs 85.2%, a 5.2-point lead.

MOT reliability, side by side

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

Metric	MZ 500R	Yamaha FZ6
First-time pass rate	90.4%	85.2%
Outright fail rate	3.7%	7.8%
Median miles at test	22,513	15,484
MOT tests analysed	188	67,149
Most common failure	steering and suspension	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.

MZ 500R 90.4% pass · 188 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.