PIAGGIO NRG vs YAMAHA YN50

The YAMAHA YN50 passes its MOT first time more often than the PIAGGIO NRG — 69.9% vs 65.5%, a 4.4-point lead.

MOT reliability, side by side

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

Metric	PIAGGIO NRG	YAMAHA YN50
First-time pass rate	65.5%	69.9%
Outright fail rate	27.4%	20.5%
Median miles at test	9,874	6,720
MOT tests analysed	40,458	17,935
Most common failure	lighting and signalling	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.

PIAGGIO NRG 65.5% pass · 40.5k tests YAMAHA YN50 69.9% pass · 17.9k tests

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