The AUDI A4 (2005-08) 4DR SALOON 2.0 TDI 140 S LINE is a smart, four-door family saloon from the premium end of the UK used-car market. Its understated shape and S line detailing give it a sportier look than a standard A4, while the 2.0-litre diesel suits drivers covering regular longer journeys. It competes with BMW 3 Series and Mercedes-Benz C-Class saloons, offering a similarly polished feel. mycarcheck.com has recorded 1,210 look-ups across 578 different VINs, a substantial sample that gives useful ownership context. Checks show an average private-sale valuation of £900 and average recorded mileage of 143,000 miles. Average annual mileage is 7,000, while cars have had around seven previous keepers on average. These figures describe checked examples, not every car, so condition and history matter greatly. Best for commuters and small families, it offers comfort, boot space and relaxed motorway travel; check service history, mileage and condition before buying.