things I would fix:
roofline, I think it would look better if you smoothed it out so it fell off naturally instead of blowing out so harshly
front bumper, right under the drivers fender, you can still see some of the rig
black smudge on the opposite side of the front bumper, most likely an artifact from over sharpening or too much clarity
the small black spot that is the passenger side bumper grille... i know it "should" be there because thats how the car is, but because of the angle you chose you can BARELY see it, so instead of having a "random black spot" I would just remove it entirely
spot heal the dust spots and that lense flare... flare has a time and place, looks off in this image IMO