I have a a 3dr S line with the spoiler and use a Saris sentinel 3 rack, this works a treat, the bottom of the rack with the foam protector bar fits just below the number plate on the top of the rear bumper. The top of the rack bar (foam protector) fits just above the Audi badge and just below the rear wiper. There are 6 straps that attach it, 2 hinge at the top where the boot opens, 2 to the side just under the rear window and two at the bottom of the boot. This is a spot on rack for the money i got it for £45. Give it a go!! The fixings are also protected so it will not scratch the motor.