Bsa A50 vs Yamaha FZS600

The Bsa A50 passes its MOT first time more often than the Yamaha FZS600 — 89.6% vs 82.6%, a 7.0-point lead.

MOT reliability, side by side

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

Metric	Bsa A50	Yamaha FZS600
First-time pass rate	89.6%	82.6%
Outright fail rate	3.7%	10.6%
Median miles at test	13,154	21,612
MOT tests analysed	1,282	136,558
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.

BSA A50 89.6% pass · 1,282 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.