Moto Guzzi V9 Bobber vs Triumph Bonneville

The Triumph Bonneville passes its MOT first time more often than the Moto Guzzi V9 Bobber — 89.0% vs 87.3%, a 1.7-point lead.

MOT reliability, side by side

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

Metric	Moto Guzzi V9 Bobber	Triumph Bonneville
First-time pass rate	87.3%	89.0%
Outright fail rate	4.7%	5.0%
Median miles at test	4,019	7,619
MOT tests analysed	716	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.

MOTO GUZZI V9 BOBBER 87.3% pass · 716 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.