Triumph Daytona 955I vs Yamaha YZF-R1

The Yamaha YZF-R1 passes its MOT first time more often than the Triumph Daytona 955I: 84.1% vs 83.8%, a 0.3-point lead.

MOT reliability, side by side

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

Metric	Triumph Daytona 955I	Yamaha YZF-R1
First-time pass rate	83.8%	84.1%
Outright fail rate	9.7%	7.8%
Median miles at test	14,119	16,705
MOT tests analysed	1,004	231,553
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.

TRIUMPH DAYTONA 955I 83.8% pass · 1,004 tests YAMAHA YZF-R1 84.1% pass · 232k tests

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