Vespa GS vs Yamaha Nmax 125

The Vespa GS passes its MOT first time more often than the Yamaha Nmax 125: 88.2% vs 82.2%, a 6.0-point lead.

MOT reliability, side by side

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

Metric	Vespa GS	Yamaha Nmax 125
First-time pass rate	88.2%	82.2%
Outright fail rate	2.4%	11.4%
Engine size	150cc	125cc
Median miles at test	4,242	30,236
MOT tests analysed	170	33,779
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.

VESPA GS 88.2% pass · 170 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.