I could be of abit more help if you posted a wire frame of it. Looking good so far. Keep in mind, for your first car this is going very well. A few areas to touch up:
From the front: Area 1 looks like a face has collapsed over another causing this distortion. I’ll need to see the wire before I can confirm that’s what happening. Area 2 you’ll want to line up / strengthen the line in this area so your wire looks like the red line. Area 3 is a little bumpy, possibly because the verts are connected vertically rather then horizontally. Could be some verts out of place too?
From the rear: Area 1 by putting a loop cut or knife cut, you can smooth out the rear end. Area 2 is looking a little bumpy, you will want to manually smooth it out by getting the verts in line. (Though this could be caused by a face going over the area vertically rather then horizontally.) Area 3 same as from the front, strengthen the line by moving the verts so they line up. Area 4 little dent, ling up verts / add one in the middle of the dent if necessary. (Possibly a vertical face happening here too.) Area 5 from the side view line up the verts from the inside of the window.
Never the less this project is advancing quickly. Keep up the good work.
Looking forward to the next renders / wires.