As KTM been very good sports bike’s company but it’s version KTM RC 390 is it’s worst version if I talk about its overall versions. It gives you mileage about 19-20 kmpl in cities which is very low as compared to its other completer bikes so yes I would give it bad rating for mileage. Then taking about comfort level its not comfortable bike at all you need to bend your back while riding this bike which can cause you severe back pain. Reliability is average as the bike is only famous because of its pickup and speed also I purchased it because of these reasons. Road grip is the only thing which was average about this bike I might say it is very slippery bike but controlling is quiet good. My final virdict or appeal would be that if you only want a bike with attractive looks and great speed then only you should go for this.