PIAGGIO NRG vs YAMAHA CS50

The YAMAHA CS50 passes its MOT first time more often than the PIAGGIO NRG — 67.4% vs 65.5%, a 1.9-point lead.

MOT reliability, side by side

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

Metric	PIAGGIO NRG	YAMAHA CS50
First-time pass rate	65.5%	67.4%
Outright fail rate	27.4%	23.8%
Median miles at test	9,874	4,453
MOT tests analysed	40,458	5,046
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 CS50 67.4% pass · 5,046 tests

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