After watching a youtube´s car project video I decided to try it a little bit to improve my skills with shading/match HDRI with 3d model etc…
As you can nottice, my HDRI is a low quality one, so…don´t mind about it.
I used a ready model, but now I´m going to model a car and try again with my own files.
car paint material looks decent, but the lighting doesnt match all that well with the backplate. Your car is way too dark for the scene, some adjustments are in order I think. Also getting some weird reflection distorition