The AUDI A4 (2001-05) 5DR AVANT 1.9 TDI 100 is a five-door estate, rather than a hatchback, offering a more premium alternative to everyday family load-luggers. In the UK used-car market it sits among older, affordable diesel estates, with the Audi badge and practical long-roof shape its main attractions. mycarcheck.com records 25 look-ups covering 20 different VINs, so these figures offer a useful snapshot, not a complete market picture. The cars checked averaged 219,000 miles, around 9,000 miles a year, and just over five previous keepers. The average private-sale valuation recorded was £200, reflecting the very modest values seen for examples in this dataset. That mileage points to commuting and longer journeys, while the Avant's luggage space suits small families, dog owners and active households. Its economical diesel and composed, refined drive made it a credible rival to BMW 3 Series and Mercedes C-Class estates; condition remains crucial for buyers.