KAWASAKI BN 125 A6F

124cc Petrol Class 1

#4478 of 5426 overall #551 of 592 KAWASAKIs #284 of 734 commuter bikes

73.2%

first-time pass rate

18.2%

failed outright

8,962

median miles at test

1,024

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2009–2025

The BN 125 A6F's first-time pass rate has fallen 15.9 points since 2009, 75.9% to 60.0%.

Pass rate by mileage

how the BN 125 A6F's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage BN 125 A6F passes first time 76.8% of the time; by 20k that's 59.0%.

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 BN 125 A6F

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
brakes	151	33.7	2.4×
drive system	63	14.1	6.5×
steering and suspension	62	13.8	1.5×
lighting and signalling	41	9.2	0.8×
structure and attachments	36	8	3.7×
tyres and wheels	23	5.1	1.1×
lamps and reflectors	22	4.9	1.0×
suspension	20	4.5	2.3×
fuel and exhaust	19	4.2	1.9×
tyres	11	2.5	1.6×

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 BN 125 A6F beats 3 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 BN 125 A6F.

Pass rate by registration year

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

Best year to buy used: 2007 (74.5% pass). Weakest: 2006 (73.0%).

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 BN 125 A6F FAQ

answers computed from the data above · terms in the glossary

Is the KAWASAKI BN 125 A6F reliable?

The KAWASAKI BN 125 A6F is about average for its class: 73.2% of its 1,024 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #4478 of 5426 models.

What does a BN 125 A6F fail its MOT on most?

brakes — 34% of all defects recorded against failed BN 125 A6F tests.

How many miles will a BN 125 A6F last?

The median BN 125 A6F shows 8,962 miles at test, and examples around 20k miles still pass 59.0% of the time — mileage alone rarely kills one.