Vespa GS160 vs Yamaha Nmax 125

The Vespa GS160 passes its MOT first time more often than the Yamaha Nmax 125: 85.9% vs 82.2%, a 3.7-point lead.

MOT reliability, side by side

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

Metric	Vespa GS160	Yamaha Nmax 125
First-time pass rate	85.9%	82.2%
Outright fail rate	5.3%	11.4%
Engine size	160cc	125cc
Rank among all models	#2232 of 5428	#3145 of 5428
Median miles at test	16,948	30,236
MOT tests analysed	262	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.

Pass rate by mileage

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

Mileage	Vespa GS160	Yamaha Nmax 125
0k-10k miles	84.2%	90.9%
10k-20k miles	85.5%	84.2%
20k-30k miles	88.1%	81.9%

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

VESPA GS160 85.9% pass · 262 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.