KAWASAKI EX305-B5

305cc Petrol Class 2

#4149 of 5426 overall #502 of 592 KAWASAKIs #2597 of 2787 other bikes

76.3%

first-time pass rate

15.1%

failed outright

25,422

median miles at test

596

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2015

The EX305-B5's first-time pass rate has held steady since 2006 (83.1% → 83.3%).

Pass rate by mileage

how the EX305-B5's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage EX305-B5 passes first time 90.4% of the time; by 40k that's 79.3%.

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-B5

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
steering and suspension	78	31.7	2.7×
brakes	56	22.8	1.5×
lighting and signalling	55	22.4	1.4×
tyres and wheels	19	7.7	1.4×
drive system	12	4.9	2.3×
fuel and exhaust	10	4.1	1.5×
lamps and reflectors	7	2.8	0.4×
suspension	4	1.6	0.9×
body and structure	3	1.2	0.7×
driving controls	2	0.8	1.4×

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-B5 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-B5.

Pass rate by registration year

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

Best year to buy used: 1988 (78.9% pass). Weakest: 1991 (72.0%).

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-B5 FAQ

answers computed from the data above · terms in the glossary

Is the KAWASAKI EX305-B5 reliable?

The KAWASAKI EX305-B5 is less reliable than average for its class: 76.3% of its 596 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #4149 of 5426 models.

What does a EX305-B5 fail its MOT on most?

steering and suspension — 32% of all defects recorded against failed EX305-B5 tests.

What is the best year of EX305-B5 to buy used?

By first-time pass rate, 1988-registered examples do best (78.9%) and 1991 worst (72.0%). Condition and history still trump the year.

How many miles will a EX305-B5 last?

The median EX305-B5 shows 25,422 miles at test, and examples around 40k miles still pass 79.3% of the time — mileage alone rarely kills one.