The AUDI A4 (2001-05) 5DR AVANT 2.5 TDI 163 SE MTRON AUTO is a mid-sized premium estate, offering more luggage space than the A4 saloon while remaining easier to park than a family wagon. In the UK market, it sits alongside estate versions of the BMW 3 Series and Mercedes C-Class. Mycarcheck.com records 45 look-ups covering 28 different cars, a useful snapshot rather than a full-market survey. Those records show an average latest mileage of 141,000 miles, around 7,000 miles driven yearly, and 5.2 previous keepers. The average private-sale valuation recorded was £400, so check each car’s condition and history carefully. This diesel automatic estate suits families, commuters and drivers who often travel farther afield, with a comfortable cabin, useful boot and relaxed gear changes. Its long-distance character distinguishes it from smaller petrol estates, while rivals may feel newer or cheaper to run. At this age, a history check matters before purchase.