Nice work there, but here is some stuff you may wanna change
the car’s material doesn’t look that good
try to change it, by adding an HDRI lightining material
the front bumper, the part below the Iron part, try to give it a better material
overall change the lightening setup, that may give you a good result
by the way, why won’t you try an environment ?
it will look great
Thank KingofSpeed, I’m doing your changes and I’m thinking of put him in a warehouse. (;