Gas Gas TX 125 Randonne vs Yamaha YBR 125

The Gas Gas TX 125 Randonne passes its MOT first time more often than the Yamaha YBR 125: 89.5% vs 71.0%, a 18.5-point lead.

MOT reliability, side by side

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

Metric	Gas Gas TX 125 Randonne	Yamaha YBR 125
First-time pass rate	89.5%	71.0%
Outright fail rate	5.2%	17.1%
Engine size	123cc	124cc
Median miles at test	1,424	10,652
MOT tests analysed	153	124,897
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.

GAS GAS TX 125 RANDONNE 89.5% pass · 153 tests YAMAHA YBR 125 71.0% pass · 125k tests

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