Honda 400 Four vs Suzuki DR-Z400S

The Honda 400 Four passes its MOT first time more often than the Suzuki DR-Z400S: 86.2% vs 80.4%, a 5.8-point lead.

MOT reliability, side by side

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

Metric	Honda 400 Four	Suzuki DR-Z400S
First-time pass rate	86.2%	80.4%
Outright fail rate	8.5%	11.1%
Median miles at test	34,352	6,940
MOT tests analysed	1,030	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.

HONDA 400 FOUR 86.2% pass · 1,030 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.