The approximate mileage of KTM 390 Duke is 25-30 kmpl. It depends directly on the way it is driven and it can even fall to a figure as low as 18-20 kmpl. The motorcycle is powered by a 373.2 cc, 1-cylinder engine producing 43 BHP and 35 Nm of torque. It comes mated to a 6-speed gearbox and retails for INR 1,95,000. The best part of the bike is it's comfortable riding position and a sprint time of just 5.6 seconds for 0-100 kmph.