The Custom Car Simulator is an innovative web application built using React Three Fiber that provides users with an immersive experience in customizing and configuring their ideal car. Users can interact with and modify a selection of four different car models, adjusting elements such as color and future features. The goal of this project is to allow users to preview their customized vehicle in a 3D environment before finalizing their choices. As part of future development, the simulator will evolve to offer more advanced customization options, such as adjusting specific parts of the car (e.g., rims, lights, interior details) and applying different textures and finishes to various components. This will enable users to achieve a high degree of personalization for their cars.