too much noise on the whole car (if You wanted to look like it's metallic, then I think that noise should be in highlights, but in shadows there should be less of it)
a lot of edges are jagged (roof, bonnet, etc) (more feather would solve this problem)
I dont like arches, they aren't oval, and front one is weird, should have some more highlights.
between front rim and bumper You can see bg, I understand that in stock there is space in that place, but stock car looks likes it missing some parts (intercooler, pipes, etc), so in finished chop there shouldn't be that strong bg between these parts.
pure white highlights on rear bumper, hm, i think that they should be as big as You make them, instead make some smaller ones.
lighting on front bumper is strange, bottom part is lit up strong, while upper ones are in full shadow.
there is no front light? black space in shape of light isn't straight (doesn't match highlight)
still pretty nice chop, keep it up ; ]