The AUDI A4 (2005-08) 4DR SALOON 1.8T 163 S LINE MTRON AUTO is a compact executive four-door saloon, offering a more polished alternative to mainstream family cars. In the UK used market it sits alongside the BMW 3 Series and Mercedes C-Class, combining a smart image with everyday practicality. Mycarcheck.com records 91 look-ups covering 39 different VINs, giving a useful snapshot of interest in this ageing model. The 1.8-litre turbo petrol engine gives brisk, flexible performance, while the automatic gearbox suits stop-start commuting and relaxed longer journeys. S line trim adds a sportier appearance, and the A4’s comfortable cabin and boot make it a sensible choice for couples, small families or regular motorway drivers. It feels more upmarket than many ordinary saloons. Checks show average mileage of 109,000 miles, annual use of 18,000 miles and nearly seven previous keepers; the private-sale estimate averages £1,000, so inspect history and condition before buying.