Pass rate over time
The 125 DUKE 21's first-time pass rate has fallen 3.9 points since 2024, 77.5% to 73.6%.
What fails on a 125 DUKE 21
| Component group | Share of defects | Defects | % of defects | vs all bikes |
|---|---|---|---|---|
| lamps and reflectors |
|
104 | 30.4 | 5.7× |
| brakes |
|
88 | 25.7 | 1.6× |
| structure and attachments |
|
68 | 19.9 | 8.1× |
| suspension |
|
25 | 7.3 | 3.1× |
| tyres |
|
21 | 6.1 | 2.9× |
| steering |
|
12 | 3.5 | 2.7× |
| audible warning (Horn) |
|
11 | 3.2 | 6.6× |
| Identification of the vehicle |
|
8 | 2.3 | 3.8× |
| wheels |
|
5 | 1.5 | 5.5× |
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 21 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 21.
Pass rate by registration year
Best year to buy used: 2021 (75.1% pass). Weakest: 2021 (75.1%).
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 21 FAQ
Is the KTM 125 DUKE 21 reliable?
The KTM 125 DUKE 21 is about average for its class: 75.1% of its 906 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #4289 of 5426 models.
What does a 125 DUKE 21 fail its MOT on most?
lamps and reflectors — 30% of all defects recorded against failed 125 DUKE 21 tests.