Kawasaki Er 400 DKF vs Suzuki AN400

The Kawasaki Er 400 DKF passes its MOT first time more often than the Suzuki AN400: 93.9% vs 86.2%, a 7.7-point lead.

MOT reliability, side by side

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

Metric	Kawasaki Er 400 DKF	Suzuki AN400
First-time pass rate	93.9%	86.2%
Outright fail rate	2.0%	9.8%
Vs comparable bikes (age & mileage adjusted)	+4.7 pts	+1.3 pts
Engine size	399cc	385cc
Rank among all models	#183 of 5428	#2148 of 5428
Median miles at test	4,268	15,861
MOT tests analysed	444	27,056
Most common failure	brakes	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 test year

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

Test year	Kawasaki Er 400 DKF	Suzuki AN400
2022	94.9%	83.0%
2023	93.4%	83.0%
2024	95.5%	83.1%
2025	92.0%	86.9%

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	Kawasaki Er 400 DKF	Suzuki AN400
0k-10k miles	95.4%	91.7%
10k-20k miles	89.6%	86.7%

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

KAWASAKI ER 400 DKF 93.9% pass · 444 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.