hey man modelling is improving from car to car, that's for sure, but for some constructive criticism, there's quite a few triangles in there, which shouldn't be there, also areas like the wheel arches need more attention, as it's not a constant smooth arc. also from the back your points/polys are all over the place on the boot and rear windows, which won't give you a smooth looking surface, which you can see from your renders. i'm also guessing you've used boole's for the holes on the disk brakes, as they look a mess, personally if you're going to the trouble of modelling a car like that with all the details, i'd model the brakes properly, makes for far more impressive wires, and is good for overall techniques and modelling ethos, over all a vast improvement, but still a lot of room for improvement.