My friend recently bought Duke 200 2017 version and I asked him about the bike and the only problem he told me was that the bike tends to heat up very soon almost within 15 to 20 minutes of riding.
It has got a coolant system but still the reason is unknown. Same was the problem with the previous generation Duke 200 too, except the heating issue the bike is a perfect combination of power and quality. Mileage is pretty less in highway or city and I wouldnt recommend this bike to people who go out on a daily basis. If you do get ready to take a bunch of notes for refilling petrol. The looks is as always very cool and its a prefect willy machine.
I hope my review helped you guys.