KAISAR KS 125-23

124cc Petrol Class 1

#5412 of 5426 overall #1 of 1 KAISARs #726 of 734 commuter bikes

46.7%

first-time pass rate

41.7%

failed outright

5,604

median miles at test

655

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2010–2016

The KS 125-23's first-time pass rate has fallen 12.1 points since 2010, 54.5% to 42.4%.

What fails on a KS 125-23

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	507	37.8	7.9×
steering and suspension	235	17.5	7.2×
brakes	193	14.4	4.0×
drive system	104	7.8	16.3×
tyres and wheels	101	7.5	5.3×
body and structure	87	6.5	19.1×
fuel and exhaust	52	3.9	8.0×
driving controls	27	2	16.2×
reg plates and vin	20	1.5	4.8×
lamps and reflectors	14	1	0.9×

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 KS 125-23 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 KS 125-23.

Pass rate by registration year

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

Best year to buy used: 2009 (51.5% pass). Weakest: 2008 (46.2%).

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.

KAISAR KS 125-23 FAQ

answers computed from the data above · terms in the glossary

Is the KAISAR KS 125-23 reliable?

The KAISAR KS 125-23 is less reliable than average for its class: 46.7% of its 655 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #5412 of 5426 models.

What does a KS 125-23 fail its MOT on most?

lighting and signalling — 38% of all defects recorded against failed KS 125-23 tests.

What is the best year of KS 125-23 to buy used?

By first-time pass rate, 2009-registered examples do best (51.5%) and 2008 worst (46.2%). Condition and history still trump the year.