Moto Morini 350 vs Suzuki DR-Z400S

The Moto Morini 350 passes its MOT first time more often than the Suzuki DR-Z400S: 84.5% vs 80.4%, a 4.1-point lead.

MOT reliability, side by side

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

Metric	Moto Morini 350	Suzuki DR-Z400S
First-time pass rate	84.5%	80.4%
Outright fail rate	8.2%	11.1%
Vs comparable bikes (age & mileage adjusted)	+0.6 pts	-6.5 pts
Engine size	344cc	398cc
Rank among all models	#2613 of 5428	#3493 of 5428
Median miles at test	31,741	6,940
MOT tests analysed	207	26,773
Most common failure	lighting and signalling	lighting and signalling

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 mileage

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

Mileage	Moto Morini 350	Suzuki DR-Z400S
0k-10k miles	94.4%	81.7%
20k-30k miles	83.3%	79.2%
30k-40k miles	73.3%	76.4%

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

MOTO MORINI 350 84.5% pass · 207 tests SUZUKI DR-Z400S 80.4% pass · 26.8k tests

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