DUCATI DIAVEL vs TRIUMPH BONNEVILLE

The DUCATI DIAVEL passes its MOT first time more often than the TRIUMPH BONNEVILLE — 90.3% vs 89.0%, a 1.3-point lead.

MOT reliability, side by side

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

Metric	DUCATI DIAVEL	TRIUMPH BONNEVILLE
First-time pass rate	90.3%	89.0%
Outright fail rate	5.4%	5.0%
Median miles at test	8,340	7,619
MOT tests analysed	8,740	195,256
Most common failure	lamps and reflectors	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.

DUCATI DIAVEL 90.3% pass · 8,740 tests TRIUMPH BONNEVILLE 89.0% pass · 195k tests

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