The AUDI A4 (2005-08) 4DR SALOON 1.9 TDI 115 is a compact executive four-door saloon, aimed at buyers wanting a more grown-up alternative to mainstream family cars. In the UK used market, it sits alongside the BMW 3 Series and Mercedes C-Class, offering a smart, understated feel without moving into large-car territory. It suits commuters and small families who value a comfortable, composed drive, useful rear doors and a separate boot for everyday errands or longer journeys. The 1.9-litre diesel is known for frugal running, making this A4 appealing to higher-mileage drivers; its restrained styling and quality cabin were key attractions against rivals, though age and condition matter greatly now. Mycarcheck recorded 37 look-ups across 29 VINs, so these figures are a useful snapshot, not a full-market verdict. Checks of these cars show an average private-sale estimate of £800, 145,000 miles, 10,000 miles a year and about 4.3 previous keepers.