The AUDI A6 (1997-04) 5DR AVANT 1.8T QUATTRO SE SPORT is a five-door estate, known by Audi as an Avant, offering executive-car comfort with useful load space. In the UK used-car market it sits among premium family estates, rather than small runabouts, and combines a turbocharged petrol engine with four-wheel drive. mycarcheck.com has recorded just two look-ups, covering one distinct VIN, so its figures are a small snapshot, not a market average. Those checks show an average private-sale valuation of £600 and mileage of 164,000 miles; average annual mileage is 7,000, while the vehicle had an average of 10 previous keepers. The cabin and estate body suit families, commuters and anyone needing room for luggage, while quattro four-wheel drive can add reassurance in bad weather. Compared with the BMW 5 Series Touring and Mercedes-Benz E-Class estate, this A6 stands out for comfort and all-weather ability; age and mileage merit checks.