The AUDI A6 (1997-04) 5DR AVANT 2.4 V6 170 SPORT is a large, premium five-door estate, rather than a hatchback or SUV. In the UK used-car market, it offered executive-car comfort with useful load space, making it a practical alternative to saloons and a more refined choice than mainstream family estates. The 2.4-litre V6 petrol engine and Sport trim give this A6 a smooth, confident feel, while the Avant body suits family holidays, regular commuting and carrying bulky shopping or hobbies. It is best for buyers wanting comfort and space, not the lowest fuel bills; its age also means condition and maintenance matter more than the badge. Against BMW 5 Series Touring and Mercedes-Benz E-Class estates, it offers understated style and a comfortable cabin. Mycarcheck checks are a small sample: three look-ups covering two VINs. They show £700 average private-sale value, 67,000 average miles, 4,000 miles yearly and 1.3 previous keepers.