Autotrader has 122 Used Audi A6 cars for sale near Atlanta, GA, including a 2012 Audi A6 3.0T Premium Plus quattro, a 2013 Audi A6 2.0T Premium Plus quattro, and a 2014 Audi A6 2.0T Premium Plus quattro ranging in price from $5,800 to $55,995.