I have RTR 180 since 2010 it's almost 6 years now . It's mileage is around 40-45 kmpl. Performance wise it is real beast. If you properly take care of it , it won't let you down ever.
Timely service is the key to the best performance one expect from it. Easy handling and adaptivity to any kinda surface make it first choice among rest. I personally feel the same as I felt on the first day I bought it. Same pleasure and same fun.