Yamaha WR426 vs Suzuki AN400

The Suzuki AN400 passes its MOT first time more often than the Yamaha WR426: 86.2% vs 78.1%, a 8.1-point lead.

MOT reliability, side by side

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

Metric	Yamaha WR426	Suzuki AN400
First-time pass rate	78.1%	86.2%
Outright fail rate	12.9%	9.8%
Median miles at test	1,981	15,861
MOT tests analysed	876	27,056
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.

YAMAHA WR426 78.1% pass · 876 tests SUZUKI AN400 86.2% pass · 27.1k tests

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