2016 Audi S6 4.0 Twin Turbo AWD Quattro w Prestige Cold Weather PKG. Certified Pre-Owned. Navigation, Leather, Moonroof, Bose MP3 Sound System, Bluetooth, Back-Up Camera, Parking Sensors, Heated Seats, Sport Alloy Wheels Much More. Only 9K Miles 1 Owner. Audi Palo Alto is the Bay Area's new Audi experience. Our New State-of-the-Art Showroom has opened, and to celebrate we are offering our best pricing of the year on all New or Pre-Owned Audi models. Our Service Department is also open 5 Days a week, so you can drop off your car and pick-up a loaner. Audi Magna Dealer Winner, two consecutive years, in our first two Years of Eligibility.