Electric vehicle is gaining popularity due to increasing concern for environment and green house emission with conventional fossil fuel vehicle. Electric vehicle may take time to become main stream in India, but demand and push from government is making it fast. Electric vehicle typically use about one third energy as compared to gasoline powered vehicle because of high efficiency. Electrical motors convert over 85% of electric energy into mechanical power compared to less than 40% in internal combustion engine. Theoretical calculation of vehicle performance is key for sizing the gear ratios, battery and systems capacity to achieve desired performance.

Keywords : EV- Electrical Vehicle SOCe- Battery state of charge energy DRR- Tire dynamic rolling radius η – Transmission mechanical efficiency g = acceleration due to gravity