The AUDI A6 (2004-09) 4DR SALOON 3.2 FSI QUATTRO S LINE is a large executive saloon for buyers seeking more room and comfort than a family hatchback. In the UK used-car market, it competes with the BMW 5 Series and Mercedes-Benz E-Class, offering understated styling and a distinctly premium feel inside. mycarcheck.com records to date are limited: four look-ups relate to one distinct VIN, so they offer a small snapshot rather than a broad reliability picture. That vehicle’s average private-sale valuation was £1,200, with recorded mileage averaging 139,000 and annual driving around 10,000 miles; it had five previous keepers on average. It suits commuters and families seeking comfort on longer journeys. The 3.2-litre petrol engine feels lively, quattro all-wheel drive adds reassuring grip, and S line trim gives it a sportier look. Fuel use will exceed smaller saloons, but this A6 stands out for its space and confident, refined character overall.