CZ 350 vs Suzuki AN400

The Suzuki AN400 passes its MOT first time more often than the CZ 350: 86.2% vs 85.9%, a 0.3-point lead.

MOT reliability, side by side

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

Metric	CZ 350	Suzuki AN400
First-time pass rate	85.9%	86.2%
Outright fail rate	5.5%	9.8%
Vs comparable bikes (age & mileage adjusted)	+1.8 pts	+1.3 pts
Engine size	344cc	385cc
Median miles at test	18,016	15,861
MOT tests analysed	128	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 mileage

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

Mileage	CZ 350	Suzuki AN400
0k-10k miles	91.5%	91.7%
20k-30k miles	86.5%	82.7%

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

CZ 350 85.9% pass · 128 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.