The AUDI A4 (2005-08) 4DR SALOON 2.0 TDI 170 S LINE SPECIAL EDITION is a premium, four-door family saloon: a more grown-up alternative to a mainstream hatchback, aimed at drivers wanting comfort and a smart image without moving to a larger car. In the UK used market, it sits alongside the BMW 3 Series and Mercedes-Benz C-Class. Mycarcheck.com has recorded 837 look-ups across 382 different VINs, giving a useful snapshot of interest in this model. Checks show an average private-sale valuation of £1,300 and average recorded mileage of 143,000 miles; annual mileage averages 9,000, while cars have had about 5.7 previous keepers. These figures describe the vehicles checked, not a guarantee of any individual car’s condition or value. With S line styling and strong diesel performance, it suits commuters and families covering longer trips. Against rivals, it blends executive polish with saloon space; check service history and condition before buying.