The AUDI A6 (2004-09) 5DR AVANT 2.0T FSI 170 SE is a large, premium five-door estate, known as the Avant. It sits in the UK’s executive-car market, combining a roomy cabin and generous luggage space for family life, holidays and longer journeys. mycarcheck.com recorded 54 checks covering 34 distinct VINs, a useful snapshot of interest in this model. Checked examples averaged 142,000 miles and about 6,000 miles a year, with roughly three to four previous keepers. The average private-sale valuation was £1,200, so condition, history and maintenance matter greatly when comparing cars at this age. The 2.0T petrol engine brings smooth performance, while SE comfort and estate practicality suit commuters and families. Compared with mainstream estates such as the Ford Mondeo, the A6 feels more upmarket and spacious, but may cost more to run. The AUDI A6 Avant suits buyers valuing comfort and carrying space over bargain motoring for everyday use.