Honda SH 125 Ad-N vs Yamaha YBR 125

The Honda SH 125 Ad-N passes its MOT first time more often than the Yamaha YBR 125: 87.7% vs 71.0%, a 16.7-point lead.

MOT reliability, side by side

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

Metric	Honda SH 125 Ad-N	Yamaha YBR 125
First-time pass rate	87.7%	71.0%
Outright fail rate	9.1%	17.1%
Vs comparable bikes (age & mileage adjusted)	+13.4 pts	-1.1 pts
Engine size	125cc	124cc
Rank among all models	#1695 of 5428	#4664 of 5428
Median miles at test	21,427	10,652
MOT tests analysed	407	124,897
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.

"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.

Pass rate by mileage

first-time MOT pass rate by miles on the clock at test

Mileage	Honda SH 125 Ad-N	Yamaha YBR 125
0k-10k miles	95.4%	76.8%
10k-20k miles	87.7%	67.4%
20k-30k miles	90.6%	63.8%
30k-40k miles	82.2%	62.2%
40k-50k miles	85.0%	63.4%
50k-60k miles	83.8%	63.6%

Bands with fewer than 30 tests for either bike are left out.

HONDA SH 125 AD-N 87.7% pass · 407 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.