Kawasaki Ej 800 BKF Street vs Yamaha FZS600

The Kawasaki Ej 800 BKF Street passes its MOT first time more often than the Yamaha FZS600: 95.7% vs 82.6%, a 13.1-point lead.

MOT reliability, side by side

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

Metric	Kawasaki Ej 800 BKF Street	Yamaha FZS600
First-time pass rate	95.7%	82.6%
Outright fail rate	2.3%	10.6%
Vs comparable bikes (age & mileage adjusted)	+6.3 pts	-0.8 pts
Engine size	773cc	599cc
Rank among all models	#41 of 5428	#3052 of 5428
Median miles at test	3,784	21,612
MOT tests analysed	258	136,558
Most common failure	lamps and reflectors	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 Ej 800 BKF Street	Yamaha FZS600
2022	100.0%	83.6%
2023	96.6%	84.2%
2024	94.4%	83.3%
2025	94.3%	84.0%

Each year mixes bikes of different ages, so a fleet that is getting older tends to slip.

KAWASAKI EJ 800 BKF STREET 95.7% pass · 258 tests YAMAHA FZS600 82.6% pass · 137k tests

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