The pass rate is the MOT first-time pass: a roadworthiness check of the items an MOT covers (brakes, lights, tyres, steering, structure, emissions), not a full mechanical inspection of engine or gearbox internals. It is a reliability signal, not a complete measure of mechanical reliability. What this measures.
“vs expected” adjusts for age, mileage and test class, so a cherished classic and a hard-used commuter are compared fairly. How this works.
Pass rate over time
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
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
| Component group | Share of defects | 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
On first-time pass rate the 125 DUKE 19 beats 0 of its 1 closest rivals (HONDA CB125F).
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.
Compare with any bike
More KTM models
Pass rate by registration year
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
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 #4233 of 5428 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.
Embed this bike
Free to embed on your site, blog or forum — a live KTM 125 Duke 19 reliability card that stays up to date and links back here. More on the free API page.