Ajs DD 250 E vs Yamaha YP250

The Yamaha YP250 passes its MOT first time more often than the Ajs DD 250 E — 82.5% vs 75.6%, a 6.9-point lead.

MOT reliability, side by side

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

Metric	Ajs DD 250 E	Yamaha YP250
First-time pass rate	75.6%	82.5%
Outright fail rate	14.9%	12.3%
Median miles at test	5,916	15,613
MOT tests analysed	201	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.

AJS DD 250 E 75.6% pass · 201 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.