The AUDI A4 (2001-05) 5DR AVANT 2.5 TDI 163 SE is a premium five-door estate, rather than a hatchback or SUV, offering useful load space in a compact executive-car package. In the UK used-car market, it sits among established alternatives such as the BMW 3 Series Touring and Mercedes-Benz C-Class estate, with Audi’s understated styling and upmarket cabin appeal. Checks on mycarcheck.com recorded 36 look-ups covering 12 distinct VINs, a useful snapshot rather than a complete picture of every car. The average private-sale valuation was £300, while the cars’ latest recorded mileage averaged 160,000 miles; average annual use was 8,000 miles, and they had about 2.9 previous keepers. That points to an older, high-mileage car best judged on condition and history. The torquey diesel suits motorway commuters and families, offering comfort, solid feel and practical luggage space for long-distance travel and holidays. Against rivals, it is a capable, premium-minded workhorse.