The vehicle dynamics model are important tools for research and development in automotive Industry . In today’s fast paced industry, the use of software-based simulation plays a vital role in testing and verification of products. The vehicle longitudinal dynamics considers the behavior of different forces acting on the vehicle during its longitudinal motion. The resistance forces in turn may affect the performance of the vehicle powertrain , pushing the propulsion system to provide more better performance to overcome the resistance. This leads to lowering of efficiency or increase in power loss. To observe the vehicle behavior in real life , it may certainly require costly experimentation or simulations , on the other hand software-based approach can lead to a less time-consuming situation.