KTM 400 EXC vs SUZUKI DR-Z400S

The SUZUKI DR-Z400S passes its MOT first time more often than the KTM 400 EXC — 80.4% vs 77.3%, a 3.1-point lead.

MOT reliability, side by side

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

Metric	KTM 400 EXC	SUZUKI DR-Z400S
First-time pass rate	77.3%	80.4%
Outright fail rate	12.1%	11.1%
Median miles at test	3,637	6,940
MOT tests analysed	5,086	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.

KTM 400 EXC 77.3% pass · 5,086 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.