Yamaha YZF-R125 vs Honda CBR 125 R-4

The Yamaha YZF-R125 passes its MOT first time more often than the Honda CBR 125 R-4 — 68.0% vs 65.1%, a 2.9-point lead.

MOT reliability, side by side

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

Metric	Yamaha YZF-R125	Honda CBR 125 R-4
First-time pass rate	68.0%	65.1%
Outright fail rate	21.6%	25.4%
Median miles at test	13,002	12,971
MOT tests analysed	63,719	6,736
Most common failure	brakes	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 YZF-R125 68.0% pass · 63.7k tests HONDA CBR 125 R-4 65.1% pass · 6,736 tests

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