In recent years, transport is playing a vital role in human life for traveling, transporting goods etc. One of the traveling mean which is widely used in our day to day life which gives the highest degree of comfort is the passenger car. One such latest generation car is Tata Nano. In this book, the detailed aerodynamic analysis of Tata Nano car is presented and a possible modification is proposed to improve the vehicle performance, with the help of computational approach using a CFD tool named Fluent.