Indian Motorcycle Scout vs Triumph Thunderbird

The Indian Motorcycle Scout passes its MOT first time more often than the Triumph Thunderbird — 92.2% vs 87.8%, a 4.4-point lead.

MOT reliability, side by side

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

Metric	Indian Motorcycle Scout	Triumph Thunderbird
First-time pass rate	92.2%	87.8%
Outright fail rate	3.8%	6.2%
Median miles at test	5,240	13,106
MOT tests analysed	3,775	56,312
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.

INDIAN MOTORCYCLE SCOUT 92.2% pass · 3,775 tests TRIUMPH THUNDERBIRD 87.8% pass · 56.3k tests

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