Bsa B44 vs Yamaha XV535

The Bsa B44 passes its MOT first time more often than the Yamaha XV535 — 90.2% vs 82.7%, a 7.5-point lead.

MOT reliability, side by side

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

Metric	Bsa B44	Yamaha XV535
First-time pass rate	90.2%	82.7%
Outright fail rate	3.9%	9.8%
Median miles at test	8,685	15,604
MOT tests analysed	620	48,056
Most common failure	steering and suspension	lighting and signalling

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 B44 90.2% pass · 620 tests YAMAHA XV535 82.7% pass · 48.1k tests

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