This paper presents in modern vehicles many number of sensors are used for different applications and also these sensors requirement increases in future, intra-vehicular wireless sensor networks (IVWSNs) have introduced in the automotive industry. This generation vehicles required advanced technology for controlling vehicle to provide safety and as they will able to reduce the amount of wiring harness inside a vehicle. By avoiding the usage of wires in vehicle, vehicle weight will reduce, then engine performance, fuel economy and reliability will improve. These advantages on an IVWSN is a flexible platform, and these can support other vehicular applications as well. And the implementation of IVWSN system of cheaper when compared to systems that are using cameras, or radars.