KAWASAKI EX305-B8

305cc Petrol Class 2

#4396 of 5426 overall #540 of 592 KAWASAKIs #2698 of 2787 other bikes

74.0%

first-time pass rate

16.9%

failed outright

22,333

median miles at test

503

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2013

The EX305-B8's first-time pass rate has fallen 15.2 points since 2006, 74.0% to 58.8%.

Pass rate by mileage

how the EX305-B8's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage EX305-B8 passes first time 82.5% of the time; by 30k that's 72.8%.

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 EX305-B8

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
steering and suspension	54	28.4	2.9×
brakes	49	25.8	1.7×
lighting and signalling	39	20.5	1.0×
tyres and wheels	15	7.9	1.4×
fuel and exhaust	9	4.7	1.8×
body and structure	8	4.2	2.1×
driving controls	5	2.6	4.2×
drive system	5	2.6	1.1×
structure and attachments	4	2.1	0.6×
steering	2	1.1	1.0×

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 EX305-B8 beats 0 of its 4 closest rivals (SUZUKI AN400, YAMAHA RD350, YAMAHA YP250).

SUZUKI AN400 86.2% pass · 27.1k tests YAMAHA RD350 86.3% pass · 19.6k tests YAMAHA YP250 82.5% pass · 12.4k tests YAMAHA WR250F 78.0% pass · 10.5k 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 EX305-B8.

Pass rate by registration year

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

Best year to buy used: 1993 (77.6% pass). Weakest: 1991 (69.2%).

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 EX305-B8 FAQ

answers computed from the data above · terms in the glossary

Is the KAWASAKI EX305-B8 reliable?

The KAWASAKI EX305-B8 is less reliable than average for its class: 74.0% of its 503 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #4396 of 5426 models.

What does a EX305-B8 fail its MOT on most?

steering and suspension — 28% of all defects recorded against failed EX305-B8 tests.

What is the best year of EX305-B8 to buy used?

By first-time pass rate, 1993-registered examples do best (77.6%) and 1991 worst (69.2%). Condition and history still trump the year.

How many miles will a EX305-B8 last?

The median EX305-B8 shows 22,333 miles at test, and examples around 30k miles still pass 72.8% of the time — mileage alone rarely kills one.