The AUDI A4 (2001-05) 5DR AVANT 2.5 TDI 180 QUATTRO SPORT is a premium five-door estate car, aimed at buyers wanting useful luggage space without moving to an SUV. In the UK market, it sits among compact executive estates, alongside the BMW 3 Series Touring and Mercedes C-Class Estate models. mycarcheck.com records 206 look-ups covering 101 distinct VINs, a useful sample for this older model. Checks show average recorded mileage of 163,000, around 6,000 miles a year, and more than six previous keepers on average. The average private-sale valuation is £400, reflecting age and condition variation, not a guaranteed asking price. With its powerful diesel engine and Quattro four-wheel drive, this A4 suits families, commuters and drivers seeking confident all-weather grip, relaxed longer journeys and a more engaging feel than an ordinary load-lugger. Its combination of practical estate space, understated styling and sporty character remains its standout appeal today.