BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ KAWASAKI/EJ 800 ACF
Model report · 2005–2025

KAWASAKI EJ 800 ACF

773cc Petrol Class 2
92.1%
first-time pass rate
3.3%
failed outright
5,517
median miles at test
508
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2015–2025

The EJ 800 ACF's first-time pass rate has fallen 2.0 points since 2015, 91.7% to 89.7%.

87%94%100%2015: 91.7% pass (36 tests)2016: 89.2% pass (65 tests)2017: 91.4% pass (58 tests)2018: 89.5% pass (38 tests)2019: 95.0% pass (40 tests)2020: 91.1% pass (45 tests)2021: 97.8% pass (46 tests)2022: 91.8% pass (49 tests)2023: 94.1% pass (51 tests)2024: 92.3% pass (39 tests)2025: 89.7% pass (39 tests)20152025

What fails on a EJ 800 ACF

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lamps and reflectors
7 29.2 0.5×
tyres and wheels
3 12.5 0.3×
lighting and signalling
3 12.5 0.1×
steering
3 12.5 1.4×
audible warning (Horn)
2 8.3 2.2×
structure and attachments
2 8.3 0.6×
brakes
2 8.3 0.1×
tyres
2 8.3 0.6×

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects. "vs all bikes" is how often this model's tests record a defect in the group, as a multiple of the all-bike rate.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the EJ 800 ACF beats 4 of its 4 closest rivals (KAWASAKI ZX-6R, SUZUKI GSF600, YAMAHA FZS600).

Rivals share this bike's type and sit within ±30% of its engine capacity, ≥ 5,000 tests. Card colour = better/worse first-time pass rate than the EJ 800 ACF.

Pass rate by registration year

how each model-year cohort fares · registration year from first use date

Best year to buy used: 2012 (92.0% pass). Weakest: 2012 (92.0%).

91%92%93%2012: 92.0% pass (314 tests)2013: 92.0% pass (174 tests)20122013

First-time pass rate by the year each bike was first registered (cohorts with ≥ 50 tests). Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years.

KAWASAKI EJ 800 ACF FAQ

answers computed from the data above · terms in the glossary

Is the KAWASAKI EJ 800 ACF reliable?

The KAWASAKI EJ 800 ACF is more reliable than average for its class: 92.1% of its 508 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #454 of 5426 models.

What does a EJ 800 ACF fail its MOT on most?

lamps and reflectors — 29% of all defects recorded against failed EJ 800 ACF tests.