hmm.. did you ever you any bluprints for this car? the wheels stick out too much and honestly i cant what year audi that is.. probably a 97-99 i'm guessing.. anyways.. not to discourage, there's one good thing about this, and thats the fact that you know how to use max (i'm assuming its made in max, right? correct me if i'm wrong) in general, you know the basics of 3d.
my suggestion is lets start from the begining.. with blueprints... there a lot of tuts out there as to how to set them up, once you get that done, its important you model each part of the according to blueprints, but more important, according to ref pictures, its not neccessarly to model each part seperate, you can model it all as one mesh and then cut out the parts, but its the exact same idea.
but honestly, i'll give you a credit for a fully completed first car, and believe me, its WAY better then my first car, lol.. i say good job