KAWASAKI EX 300 ADF

296cc Petrol Class 2

#2820 of 5426 overall #333 of 592 KAWASAKIs #1779 of 2787 other bikes

83.7%

first-time pass rate

9.4%

failed outright

7,890

median miles at test

741

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2016–2025

The EX 300 ADF's first-time pass rate has fallen 4.2 points since 2016, 89.3% to 85.1%.

Pass rate by mileage

how the EX 300 ADF's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage EX 300 ADF passes first time 86.5% of the time; by 20k that's 82.7%.

First-time pass rate by odometer reading at test, 10,000-mile bands for this model. Mileage is the strongest reliability signal. See the full curve.

What fails on a EX 300 ADF

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
brakes	38	29.9	0.9×
lamps and reflectors	27	21.3	1.6×
lighting and signalling	16	12.6	0.3×
structure and attachments	13	10.2	2.2×
tyres	9	7.1	1.4×
tyres and wheels	7	5.5	0.5×
suspension	6	4.7	1.1×
Identification of the vehicle	4	3.1	2.3×
steering and suspension	4	3.1	0.2×
drive system	3	2.4	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 EX 300 ADF beats 3 of its 4 closest rivals (YAMAHA RD350, YAMAHA YP250, YAMAHA WR250F).

YAMAHA RD350 86.3% pass · 19.6k tests YAMAHA YP250 82.5% pass · 12.4k tests YAMAHA WR250F 78.0% pass · 10.5k tests HONDA XR250 78.8% pass · 9,277 tests

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 EX 300 ADF.

Pass rate by registration year

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

Best year to buy used: 2013 (83.6% pass). Weakest: 2012 (82.5%).

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 EX 300 ADF FAQ

answers computed from the data above · terms in the glossary

Is the KAWASAKI EX 300 ADF reliable?

The KAWASAKI EX 300 ADF is about average for its class: 83.7% of its 741 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #2820 of 5426 models.

What does a EX 300 ADF fail its MOT on most?

brakes — 30% of all defects recorded against failed EX 300 ADF tests.

How many miles will a EX 300 ADF last?

The median EX 300 ADF shows 7,890 miles at test, and examples around 20k miles still pass 82.7% of the time — mileage alone rarely kills one.