The AUDI A6 (1997-04) 5DR AVANT 2.5 TDI 155 SE is a large five-door estate, offering more carrying space than a saloon without the bulk of an SUV. In the UK used-car market, it is a premium family and touring car, with room for passengers, luggage and everyday loads. The 2.5-litre diesel and comfortable driving character suit commuting, family trips and motorway journeys. Compared with mainstream estates, the A6 Avant feels more spacious and refined, and competes with alternatives such as the BMW 5 Series Touring and Mercedes-Benz E-Class Estate. Its understated styling and practical cabin make it a capable, discreet choice. mycarcheck.com has only two look-ups for this model, representing one VIN, so its figures are indicative only: average private-sale value £600, mileage 195,000, annual mileage 10,000 and 13 previous keepers. Check condition and history carefully; nevertheless, this AUDI A6 estate offers space and long-distance comfort for budget-conscious used-car buyers.