The AUDI A6 (1997-04) 5DR AVANT 2.7T 250 QUATTRO SPORT is a premium, five-door estate: roomier for luggage than the A6 saloon, yet comfortable as an everyday car. In the UK market it competes with executive estates such as the BMW 5 Series Touring and Mercedes-Benz E-Class. The turbocharged petrol engine and four-wheel drive make this Sport brisk and reassuring in poor weather. Its roomy cabin and useful boot suit families, commuters and drivers seeking a refined long-distance car with extra grip. That blend of estate practicality and all-weather confidence helps it stand out, though age-related upkeep deserves attention. mycarcheck.com data covers 11 look-ups and six distinct VINs, a modest sample. It records an average private-sale valuation of £1,100, average mileage of 133,000 and annual mileage of 4,000; cars had about 4.2 previous keepers on average. Use these figures as context, and check each car’s history, condition and servicing before buying.