Yamaha TZR50 vs Piaggio NRG

The Piaggio NRG passes its MOT first time more often than the Yamaha TZR50 — 65.5% vs 52.4%, a 13.1-point lead.

MOT reliability, side by side

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

Metric	Yamaha TZR50	Piaggio NRG
First-time pass rate	52.4%	65.5%
Outright fail rate	34.6%	27.4%
Median miles at test	9,748	9,874
MOT tests analysed	2,051	40,458
Most common failure	steering and suspension	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 TZR50 52.4% pass · 2,051 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.