Audi Certified Pre-Owned-- FACTORY WARRANTY FOR 5 YEARS FROM ORIGINAL SALE DATE WITH UNLIMITED MILES!! CARFAX One-Owner. Certified. 2019 Audi A6 3.0T Prestige quattro quattro, Black w/Leather Seating Surfaces, 4-Zone Automatic Climate Control, Audi Active Lane Assist... via vAuto, Inc.