The AUDI A6 (2004-09) 5DR AVANT 2.7 TDI QUATTRO SE TIP AUTO is an executive estate, offering more space than the A6 saloon while keeping an understated look. In the UK used-car market, it sits among premium family wagons, competing with estate versions of the BMW 5 Series and Mercedes-Benz E-Class. The mycarcheck.com picture is based on 396 look-ups covering 149 VINs, a useful sample of cars checked. Recorded examples average 169,000 miles and around 9,000 miles a year, with almost five previous keepers; the average private-sale valuation is £1,100. These figures describe checked cars, not a guaranteed price for each car. With a diesel engine, automatic gearbox and quattro four-wheel drive, this A6 suits families, long-distance commuters and drivers wanting all-weather travel, plus estate practicality. It is best known for a comfortable, composed ride and a roomy cabin, making it an alternative to executive saloons when carrying people and extra gear.