Bsa 250 vs Yamaha YP250

The Bsa 250 passes its MOT first time more often than the Yamaha YP250: 89.8% vs 82.5%, a 7.3-point lead.

MOT reliability, side by side

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

Metric	Bsa 250	Yamaha YP250
First-time pass rate	89.8%	82.5%
Outright fail rate	2.5%	12.3%
Engine size	250cc	249cc
Rank among all models	#1025 of 5428	#3073 of 5428
Median miles at test	9,157	15,613
MOT tests analysed	244	12,433
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.

Pass rate by mileage

first-time MOT pass rate by miles on the clock at test

Mileage	Bsa 250	Yamaha YP250
0k-10k miles	87.9%	88.6%
10k-20k miles	88.1%	82.5%
20k-30k miles	90.9%	78.6%

Bands with fewer than 30 tests for either bike are left out.

BSA 250 89.8% pass · 244 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.