The AUDI A6 (1997-04) 5DR AVANT 1.9 TDI 110 SE is a five-door estate, offering more luggage space than the A6 saloon while retaining a smart, roomy executive-car feel. In the UK it sits among larger family and business estates, rather than small hatchbacks or SUVs. Its understated styling and practical shape make it a useful choice for carrying passengers, shopping or holiday luggage. The 1.9-litre diesel is best suited to commuters, growing families and drivers who value a comfortable long-distance car with useful space. The Avant's wagon-like versatility is a key advantage over many saloons, and the A6 was a polished alternative to contemporary BMW 5 Series and Mercedes-Benz E-Class estates. Its age means condition matters greatly. mycarcheck.com: two look-ups for one VIN make this a small snapshot: average private-sale value £500, most recent recorded mileage 177,000, annual mileage 6,000 and six previous keepers. Check the car's history and condition.