The third industrial revolution, also known as Additive Manufacturing, is a new technique that enables the creation of objects based on a 3D digital model in order to reduce waste, customize products, and produce car parts in low volumes using various techniques. In the pursuit of achieving lightweight and high-performance components to enhance vehicle performance and efficiency, the automotive industry is continuously turning to advanced manufacturing technologies such as 3D printing. This study aims to design, simulate, and experimentally investigate the mechanical properties of a 3D printed Lightweight structure part for automotive applications using the Fused Deposition Method (FDM). A Finite Element Analysis software will be used to assess the mechanical behavior of this part under different loading conditions. By comparing the experimental and simulation results, this research aims to demonstrate the weight savings and potential performance benefits achievable with this structure.