I'm sorry, I was rash in responding... What I meant was that the ground clearance ranges between 12,5 cm and 18,5 cm for the Allroad, not the standard Avant, which has a standard ground clearance of 12 cm, if I recall correctly. Also, I'm not certain, but I think that regular versions of A6 don't feature the air suspension and hence cannot regulate their ground clearance. The more expensive A8 does, however.