Triumph T20 vs Yamaha YP250

The Triumph T20 passes its MOT first time more often than the Yamaha YP250: 88.1% vs 82.5%, a 5.6-point lead.

MOT reliability, side by side

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

Metric	Triumph T20	Yamaha YP250
First-time pass rate	88.1%	82.5%
Outright fail rate	3.7%	12.3%
Median miles at test	8,070	15,613
MOT tests analysed	901	12,433
Most common failure	lighting and signalling	brakes

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.

TRIUMPH T20 88.1% pass · 901 tests YAMAHA YP250 82.5% pass · 12.4k tests

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