All A6 Avants come standard with LED matrix headlights, four-zone climate control, progressive steering, five driving modes, wheels from 18" and only if ordered with quattro traction can also be ordered with rear axle steering. The most sophisticated suspension (after the standard and sport suspension of the S line and Black line), the adaptive air suspension that maintains the height regardless of the load, is also paid for separately, as is a vibrant Bang&Olufsen audio system with speakers integrated in the headrests