Yamaha RD350 vs Honda XR400

The Yamaha RD350 passes its MOT first time more often than the Honda XR400 — 86.3% vs 78.5%, a 7.8-point lead.

MOT reliability, side by side

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

Metric	Yamaha RD350	Honda XR400
First-time pass rate	86.3%	78.5%
Outright fail rate	6.6%	11.7%
Median miles at test	23,256	7,203
MOT tests analysed	19,574	13,268
Most common failure	lighting and signalling	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.

YAMAHA RD350 86.3% pass · 19.6k tests HONDA XR400 78.5% pass · 13.3k tests

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