Piaggio Vespa PX 150 vs Yamaha Nmax 125

The Piaggio Vespa PX 150 passes its MOT first time more often than the Yamaha Nmax 125: 85.3% vs 82.2%, a 3.1-point lead.

MOT reliability, side by side

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

Metric	Piaggio Vespa PX 150	Yamaha Nmax 125
First-time pass rate	85.3%	82.2%
Outright fail rate	8.2%	11.4%
Median miles at test	5,946	30,236
MOT tests analysed	598	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.

PIAGGIO VESPA PX 150 85.3% pass · 598 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.