The AUDI A6 (1997-04) 4DR SALOON 1.8T SPORT is a large, four-door executive saloon from the upper end of the family-car market. It offers more space and comfort than a typical hatchback, making it a practical older alternative to premium rivals such as the BMW 5 Series and Mercedes-Benz E-Class. Its 1.8-litre turbo petrol engine gives the A6 a blend of relaxed everyday pace and passing power, while Sport trim adds a firmer, more purposeful feel. It suits commuters, couples or small families wanting a comfortable motorway car, though its size and age make it less appealing for tight city parking. mycarcheck.com has recorded just two look-ups, covering two cars, so its figures are indicative rather than representative. Those checks show an average private-sale valuation of £600, 130,000 miles and 5,000 miles driven yearly; cars averaged 5.5 previous keepers. Check condition and history carefully: age, mileage and maintenance matter greatly.