Husqvarna SM450R vs Suzuki AN400

The Suzuki AN400 passes its MOT first time more often than the Husqvarna SM450R: 86.2% vs 81.4%, a 4.8-point lead.

MOT reliability, side by side

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

Metric	Husqvarna SM450R	Suzuki AN400
First-time pass rate	81.4%	86.2%
Outright fail rate	10.8%	9.8%
Vs comparable bikes (age & mileage adjusted)	-6.9 pts	+1.3 pts
Engine size	450cc	385cc
Rank among all models	#3291 of 5428	#2148 of 5428
Median miles at test	2,288	15,861
MOT tests analysed	361	27,056
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.

"Vs comparable bikes" is the first-time pass rate minus the rate expected for each bike's own mix of age, mileage and test class, in percentage points: positive means better than comparable bikes. How this works.

Pass rate by test year

first-time MOT pass rate in each calendar year both bikes were tested

Test year	Husqvarna SM450R	Suzuki AN400
2008	81.8%	87.6%
2009	75.7%	87.0%
2010	80.0%	86.9%

Each year mixes bikes of different ages, so a fleet that is getting older tends to slip.

HUSQVARNA SM450R 81.4% pass · 361 tests SUZUKI AN400 86.2% pass · 27.1k tests

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