The AUDI A6 (2011-15) 4DR S6 SALOON QUATTRO 4.0 TFSI V8 420 EU5 STRON AUTO7 is a large, four-door executive saloon, sitting near the premium end of the UK used-car market. It combines A6 practicality with S6 performance, offering a roomy cabin and proper boot for everyday journeys and longer trips. mycarcheck.com has recorded 292 look-ups across 66 distinct VINs, a solid sample for this specialist model. Checks show an average private-sale valuation of £13,200 and average recorded mileage of 73,000 miles; average annual use is 5,000 miles. Cars had four previous keepers on average, so check each vehicle’s history carefully. Quattro four-wheel drive and a powerful V8 make the S6 appealing to drivers wanting quick, confident performance, while its styling suits use and family travel. Against rivals including the BMW 5 Series and Mercedes-Benz E-Class, it stands out for pace and traction, though fuel costs can be substantial.