Well technically there is nothing wrong with it. Lighting is ok, materials ore ok, modelling is fine (if all the surface curvatures are exactly how you wanted) and renders show the car decently. Is it the best car render I saw? No. But it is above average - it is the standard car render that there are many on the internet and it is executed rather well enough.
I see a problem in the car design though. That is a subjective matter and you will have to sample large audience to see if this design is successful or not. Maybe it’s only me, but I don’t like the car design at all. The reason why is mostly because of the front of the car, it looks like if it was in a crash against a wall. This feeling is probably also caused by a lot of surface bumps and that every element in the front looks somehow deformed or misplaced (there is too much space between the mask ovals). Maybe it doesn’t look like a crashed front, but better description is like it is melting. From the back and side the car looks fine.