List of changes/additions that I have made:
Body/interior:
PBR textures for paint, chrome,
The textures of wood and lead in the cabin,
functional mirrors have been changed,
Front and rear license plate,
lettering 523i and 535i,
Automatic switch,
Working radiator fan,
Under the light (neon)
, the car UV has been redesigned to make it a skin based on the clk 500 from NFS MW (in some parts, UV is still not quite the same)
Added 3 skins + 1 skin template so you can make your own