SWM RS vs Yamaha WR250F

The SWM RS passes its MOT first time more often than the Yamaha WR250F — 84.6% vs 78.0%, a 6.6-point lead.

MOT reliability, side by side

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

Metric	SWM RS	Yamaha WR250F
First-time pass rate	84.6%	78.0%
Outright fail rate	7.5%	12.8%
Median miles at test	2,858	3,018
MOT tests analysed	228	10,465
Most common failure	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.

SWM RS 84.6% pass · 228 tests YAMAHA WR250F 78.0% pass · 10.5k tests

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