BSA C15 vs YAMAHA YP250

The BSA C15 passes its MOT first time more often than the YAMAHA YP250 — 89.2% vs 82.5%, a 6.7-point lead.

MOT reliability, side by side

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

Metric	BSA C15	YAMAHA YP250
First-time pass rate	89.2%	82.5%
Outright fail rate	5.3%	12.3%
Median miles at test	14,164	15,613
MOT tests analysed	5,892	12,433
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 C15 89.2% pass · 5,892 tests YAMAHA YP250 82.5% pass · 12.4k tests

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