KAWASAKI KMX125

124cc Petrol Class 1

#5155 of 5426 overall #591 of 592 KAWASAKIs #595 of 734 commuter bikes

61.7%

first-time pass rate

26.5%

failed outright

14,115

median miles at test

8,538

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2005–2025

The KMX125's first-time pass rate has risen 5.2 points since 2005, 69.4% to 74.6%.

Pass rate by mileage

how the KMX125's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage KMX125 passes first time 68.5% of the time; by 50k that's 52.8%.

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 KMX125

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	3,161	34.2	4.1×
steering and suspension	1,579	17.1	3.9×
brakes	1,441	15.6	2.5×
tyres and wheels	855	9.3	3.6×
drive system	711	7.7	7.8×
lamps and reflectors	371	4	1.4×
reg plates and vin	344	3.7	5.9×
fuel and exhaust	334	3.6	4.6×
body and structure	299	3.2	5.2×
structure and attachments	141	1.5	1.7×

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 KMX125 beats 0 of its 4 closest rivals (YAMAHA YBR 125, HONDA CG125, HONDA CBF125).

YAMAHA YBR 125 71.0% pass · 125k tests HONDA CG125 72.2% pass · 89.3k tests HONDA CBF125 73.3% pass · 84.4k tests GILERA RUNNER 70.8% pass · 69.9k 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 KMX125.

Pass rate by registration year

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

Best year to buy used: 1986 (68.6% pass). Weakest: 1993 (53.4%).

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 KMX125 FAQ

answers computed from the data above · terms in the glossary

Is the KAWASAKI KMX125 reliable?

The KAWASAKI KMX125 is less reliable than average for its class: 61.7% of its 8,538 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #5155 of 5426 models.

What does a KMX125 fail its MOT on most?

lighting and signalling — 34% of all defects recorded against failed KMX125 tests.

What is the best year of KMX125 to buy used?

By first-time pass rate, 1986-registered examples do best (68.6%) and 1993 worst (53.4%). Condition and history still trump the year.

How many miles will a KMX125 last?

The median KMX125 shows 14,115 miles at test, and examples around 50k miles still pass 52.8% of the time — mileage alone rarely kills one.