Morini 3.5 vs Suzuki AN400

The Morini 3.5 passes its MOT first time more often than the Suzuki AN400: 86.4% vs 86.2%, a 0.2-point lead.

MOT reliability, side by side

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

Metric	Morini 3.5	Suzuki AN400
First-time pass rate	86.4%	86.2%
Outright fail rate	5.6%	9.8%
Vs comparable bikes (age & mileage adjusted)	+2.5 pts	+1.3 pts
Engine size	344cc	385cc
Rank among all models	#2091 of 5428	#2148 of 5428
Median miles at test	30,387	15,861
MOT tests analysed	1,571	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.

What fails, side by side

share of each bike's MOT tests that failed on the component · lower is better

Component	Morini 3.5	Suzuki AN400
Brakes	1.7%	4.4%
Lights & signalling	3.1%	2.6%
Steering & suspension	2.3%	2.3%
Tyres & wheels	1.0%	3.2%
Fuel & exhaust	0.4%	0.4%
Structure & body	0.5%	0.3%
Drive system	0.4%	0%

A test that fails on two components counts once in each. Component links go to the bikes most likely to fail on it.

Pass rate by test year

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

Test year	Morini 3.5	Suzuki AN400
2014	89.5%	85.0%
2015	82.9%	86.6%
2016	78.8%	85.5%
2017	92.5%	86.8%
2018	86.4%	85.7%
2019	90.5%	84.4%
2020	78.4%	84.5%
2021	93.5%	85.1%

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

Pass rate by mileage

first-time MOT pass rate by miles on the clock at test

Mileage	Morini 3.5	Suzuki AN400
0k-10k miles	88.0%	91.7%
10k-20k miles	85.8%	86.7%
20k-30k miles	86.3%	82.7%
30k-40k miles	86.6%	81.0%
40k-50k miles	87.3%	79.7%
50k-60k miles	86.5%	75.7%

Bands with fewer than 30 tests for either bike are left out.

Morini 3.5 vs Suzuki AN400 FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Morini 3.5 or the Suzuki AN400?

The Morini 3.5 passes its MOT first time more often than the Suzuki AN400: 86.4% vs 86.2%, a 0.2-point lead. Adjusted for age, mileage and test class, the Morini 3.5 still comes out ahead: +2.5 points vs comparable bikes for the Morini 3.5, +1.3 for the Suzuki AN400. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Morini 3.5 fail its MOT on most?

Lights & signalling: 3.1% of Morini 3.5 MOT tests failed on it, then steering & suspension (2.3%).

What does the Suzuki AN400 fail its MOT on most?

Brakes: 4.4% of Suzuki AN400 MOT tests failed on it, then tyres & wheels (3.2%).

Which holds up better at high mileage, the Morini 3.5 or the Suzuki AN400?

At 50k-60k miles the Morini 3.5 passes first time more often: 86.5% for the Morini 3.5 vs 75.7% for the Suzuki AN400.

MORINI 3.5 86.4% pass · 1,571 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.