Vespa GS150 vs Yamaha Nmax 125

The Vespa GS150 passes its MOT first time more often than the Yamaha Nmax 125: 90.5% vs 82.2%, a 8.3-point lead.

MOT reliability, side by side

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

Metric	Vespa GS150	Yamaha Nmax 125
First-time pass rate	90.5%	82.2%
Outright fail rate	6.6%	11.4%
Engine size	150cc	125cc
Median miles at test	10,746	30,236
MOT tests analysed	137	33,779
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.

VESPA GS150 90.5% pass · 137 tests YAMAHA NMAX 125 82.2% pass · 33.8k tests

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