What's the KTM Duke 125 like in terms of long-term reliability?

Potential buyers and owners of the KTM Duke 125 are interested in the long-term reliability of this motorcycle. Expectations of quality and durability are expected from a premium small-displacement motorcycle. While KTM’s reputation for high-performance machines sometimes raises questions about how much maintenance they really need and if they will have issues down the road. Riders talk about what problems they might encounter, how much (and how often) they need to service it, and how it stands up to different usage patterns, from daily commuting to weekend fun rides. It's also interesting to see how it stacks up reliability-wise against Japanese competitors in the same class. Now, let’s take a look at how the Duke 125 has held up in the real world and in the long term and high mileages.