The Audi A4 is a luxury sedan that has been a part of Audi's automobile line since 1994. Over the years its design and body have evolved, appealing to demographics both young and old. Some A4 owners like to perform repairs and modifications themselves. By having the knowledge to remove the rear bumper, it gives you access to some of the hard-to-reach places behind and around it.
Remove the boot liners. They will simply pull right out on both the passenger and driver's side of the car, revealing the nuts that hold on the bumper.
Remove the 10mm nuts from the inside of the boot. There are five nuts on both the driver's and passenger's side.
Locate the plastic push screws in the wheel wells. Pry the screws out of the wheel well lining with a flathead screwdriver.
Look directly under the bumper and locate the last two screws holding the bumper on. Remove those two screws using the Phillips-head screwdriver.
Pull the bumper straight out. It will slide off of the car.