KTM 125 DUKE 19

125cc Petrol Class 1

#4230 of 5426 overall #199 of 230 KTMs #194 of 205 naked bikes

75.6%

first-time pass rate

15.2%

failed outright

7,950

median miles at test

1,897

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2022–2025

The 125 DUKE 19's first-time pass rate has fallen 4.4 points since 2022, 78.5% to 74.1%.

Pass rate by mileage

how the 125 DUKE 19's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage 125 DUKE 19 passes first time 79.9% of the time; by 20k that's 64.9%.

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 125 DUKE 19

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lamps and reflectors	202	28.3	4.7×
brakes	193	27	1.7×
structure and attachments	165	23.1	8.8×
suspension	41	5.7	2.6×
tyres	39	5.5	2.5×
steering	34	4.8	3.8×
Identification of the vehicle	20	2.8	4.3×
audible warning (Horn)	14	2	4.0×
wheels	6	0.8	5.3×

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 125 DUKE 19 beats 0 of its 1 closest rivals (HONDA CB125F).

HONDA CB125F 81.2% pass · 30.6k 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 125 DUKE 19.

Pass rate by registration year

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

Best year to buy used: 2020 (75.9% pass). Weakest: 2019 (75.5%).

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.

KTM 125 DUKE 19 FAQ

answers computed from the data above · terms in the glossary

Is the KTM 125 DUKE 19 reliable?

The KTM 125 DUKE 19 is more reliable than average for its class: 75.6% of its 1,897 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #4230 of 5426 models.

What does a 125 DUKE 19 fail its MOT on most?

lamps and reflectors — 28% of all defects recorded against failed 125 DUKE 19 tests.

How many miles will a 125 DUKE 19 last?

The median 125 DUKE 19 shows 7,950 miles at test, and examples around 20k miles still pass 64.9% of the time — mileage alone rarely kills one.