Ariel VH500 vs Yamaha FZS600

The Ariel VH500 passes its MOT first time more often than the Yamaha FZS600: 91.1% vs 82.6%, a 8.5-point lead.

MOT reliability, side by side

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

Metric	Ariel VH500	Yamaha FZS600
First-time pass rate	91.1%	82.6%
Outright fail rate	3.5%	10.6%
Engine size	500cc	599cc
Rank among all models	#659 of 5428	#3052 of 5428
Median miles at test	11,337	21,612
MOT tests analysed	202	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.

ARIEL VH500 91.1% pass · 202 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.