The AUDI A6 (2011-15) 5DR AVANT 3.0 TDI V6 DPF SS 204 EU5 S LINE 6SPD is a premium five-door estate with useful load space and executive style. In the UK, it competes with family cars and business estates, for buyers wanting comfort and versatility in equal measure on longer journeys. Mycarcheck.com has recorded 75 look-ups covering 33 distinct VINs, a useful sample of cars checked, though not a measure of reliability. Checks show an average private-sale valuation of £6,700, average recorded mileage of 111,000 miles, annual use around 9,000 miles and 3.2 previous keepers on average in this data set. The 3.0-litre diesel suits motorway journeys, commuting and family holidays, combining relaxed long-distance driving with useful carrying space. S line trim adds a sportier look. Best suited to drivers wanting a comfortable, capable estate, it is a more understated alternative to BMW 5 Series Touring and Mercedes-Benz E-Class estates rivals.