The AUDI A6 (2004-09) 4DR SALOON 2.4 V6 177 QUATTRO S LINE is a spacious, premium four-door executive saloon, aimed at buyers wanting more comfort and presence than a family car. In the UK, it sits alongside the BMW 5 Series and Mercedes-Benz E-Class, offering understated style and practicality. With a 2.4-litre V6 and quattro four-wheel drive, this S line version blends smooth, confident performance with reassuring grip in poor weather. Its roomy cabin and comfortable ride suit commuting, business travel and family journeys, while the saloon shape brings a feel than a hatchback. Expect running costs to reflect its age and petrol engine. mycarcheck.com has recorded 12 look-ups across five distinct cars (VINs), so the sample is limited; those records average 117,000 miles, 5,000 miles a year and just over four previous keepers. The average private-sale estimate is £1,100, making a history check and condition assessment especially worthwhile.