Royal Alloy GP 125 Ac E5 vs Piaggio Vespa

The Royal Alloy GP 125 Ac E5 passes its MOT first time more often than the Piaggio Vespa — 90.9% vs 80.7%, a 10.2-point lead.

MOT reliability, side by side

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

Metric	Royal Alloy GP 125 Ac E5	Piaggio Vespa
First-time pass rate	90.9%	80.7%
Outright fail rate	7.9%	12.2%
Median miles at test	2,493	10,023
MOT tests analysed	165	287,482
Most common failure	brakes	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.

ROYAL ALLOY GP 125 AC E5 90.9% pass · 165 tests PIAGGIO VESPA 80.7% pass · 287k tests

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