Overall, the installation instructions were good except for
1) In my 2015 Audi A4, I needed a deep 6 mm socket to remove the rear facia. I did not have one on hand, so I had to stop and go buy one.
2) The wiring chart is not correct. On the left hand side, the Yellow harness wire goes to the Black & White Wire, and the Brown harness wire goes to the Green wire. On the right side, the Green Wire goes to the Gray & Blue wire.
Other than those frustrations, the installation was straightforward. The hitch is very solid, with no movement.