Yamasaki YM125-3 vs Yamaha YBR 125

The Yamaha YBR 125 passes its MOT first time more often than the Yamasaki YM125-3: 71.0% vs 57.7%, a 13.3-point lead.

MOT reliability, side by side

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

Metric	Yamasaki YM125-3	Yamaha YBR 125
First-time pass rate	57.7%	71.0%
Outright fail rate	28.8%	17.1%
Vs comparable bikes (age & mileage adjusted)	-17.1 pts	-1.1 pts
Engine size	124cc	124cc
Median miles at test	5,513	10,652
MOT tests analysed	104	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.

"Vs comparable bikes" is the first-time pass rate minus the rate expected for each bike's own mix of age, mileage and test class, in percentage points: positive means better than comparable bikes. How this works.

YAMASAKI YM125-3 57.7% pass · 104 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.