If you’re looking to make your car in Grand Theft Auto 5 your own, there are a few things you’ll need to do. First, head to the Vehicle Workshop and find the car you want to modify. Once you’ve found it, head into the garage and select “Customize.” From here, you’ll need to choose what kind of modifications you want to make. You can add new body panels, change the color of your car, or even add a custom decal. Once you’ve made your choices, hit “Next” and wait for the modifications to be completed. Once they are, head back out into the world and enjoy your new car! ..