I love my RS6, but it cannot compare to the technology in a brand new CTS-V......interior, exterior or any other aspect for that matter. I drove around quite a bit as a driver and passenger and can say I never heard any rattles from loose or poorly fitting trim pieces. The only negative thing about the interior I can say is that the controls were very "busy". I get it that this is the RS6 forum, but c'mon.....be realistic.