A spoiler is an aerodynamic component that reduces drag in cars. The rear spoiler of an automobile improves stability and reduces aerodynamic drag, resulting in better road grip. This rear-positioned device creates high pressure to replace low pressure on the trunk, resulting in greater stability. The objective of this study is to provide the impact of spoilers on lift and drag forces on the vehicle, hence selecting the suitable configuration of the spoiler to further increase the handling, stability, and efficiency of the vehicle. Both the sedan car and the rear wing spoiler model were created with Computer-Aided Design software. The data was then examined using Computational Fluid Dynamic software to compute the drag and lift force operating on the moving sedan automobile at a velocity of 60, 90, 120, and 150 km/h. The simulation included a sedan car and a rear wing spoiler configuration. To validate the analytical data, we fabricated the scaled model of the spoiler and calculated experimental values using a wind tunnel apparatus. This study found that using spoilers significantly reduces the lift and drag coefficients. Both the coefficients were reduced, and the drag coefficient was reduced by 12.5% and the lift coefficient was reduced by 25.58% thus improving the performance and stability of the vehicle.