Yamaha Aerox R vs Piaggio NRG

The Yamaha Aerox R passes its MOT first time more often than the Piaggio NRG: 79.5% vs 65.5%, a 14.0-point lead.

MOT reliability, side by side

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

Metric	Yamaha Aerox R	Piaggio NRG
First-time pass rate	79.5%	65.5%
Outright fail rate	11.2%	27.4%
Median miles at test	6,366	9,874
MOT tests analysed	1,066	40,458
Most common failure	lamps and reflectors	lighting and signalling

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.

YAMAHA AEROX R 79.5% pass · 1,066 tests PIAGGIO NRG 65.5% pass · 40.5k tests

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