I really like your render. I think that it is nice how the black stripe down the hood is not black because of the clearcoat and angle. There are two things I think might improve your render. There seems to be a strange round shape in the floor reflection coming from under the hood which is somewhat distracting. It is on the floor, bewteen the front right bumper edge and the mustang plate (the plate is a very nice touch). More distracting is the texture of the tires. The look plastic-like, way to reflective. I think if you dulled the tecture down so it looked like rubber rather than hard plastic, this would be excellent. Overall, looks great...
