Yamaha YQ 50 Aerox vs Piaggio Zip

The Piaggio Zip passes its MOT first time more often than the Yamaha YQ 50 Aerox: 71.3% vs 57.3%, a 14.0-point lead.

MOT reliability, side by side

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

Metric	Yamaha YQ 50 Aerox	Piaggio Zip
First-time pass rate	57.3%	71.3%
Outright fail rate	33.5%	20.4%
Median miles at test	11,784	8,882
MOT tests analysed	4,773	78,993
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.

YAMAHA YQ 50 AEROX 57.3% pass · 4,773 tests PIAGGIO ZIP 71.3% pass · 79.0k tests

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