WARNING: This page is about a different car, the 2015 Audi A7 Quattro, 2014 Audi A7 Quattro, 2013 Audi A7, and 2012 Audi A7. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Checking Distance Of End Pipes At Left/Right To Bumper
Courtesy of AUDI OF AMERICA, LLC
-- Check distance of left and right tail pipes to bumper: