Abstract: Due to the increase in the cost of fuels and pollution, alternative to conventional internal combustion engine powered vehicles is needed. As electric vehicles are environment friendly, they are considered green transportation. In an electric vehicle various components like motor, battery, controllers are used. While designing an electric vehicle, the first and foremost component to be selected is an electric motor which replaces the Internal Combustion engines of conventional vehicles. Therefore, electric motor used in an electric vehicle must produce appropriate power and other characteristics that are required for traction purpose. The important task is to select an appropriate rating of motor based on the load to be carried. This paper describes the procedure for proper selection of rating of electric motor with an example of DC motor for an electric car. Vehicle dynamics is considered for selecting the proper electric motor that would provide required power and torque for traction. To achieve all traction characteristics in compact size, a proper selection of motor rating should be done based on the load.