YAMAHA RX 100 is a good bike but dont have feature youj look for in bike even scooters nowdays are far more better than this, talking about mileage its around 25 kmpl but if its in bad condition or some old it gives you around 15kmpl which is not at all acceptable nowdays because of tough competition in bikes . you will not feel comfortable while driving this one as ver old look design is old so appeal is bad and road grip depends on how lucky you are while driving .
Will not recommend this to anyone .