The AUDI A6 (2004-09) 5DR AVANT 2.7 TDI TDV S LINE MTRON AUTO is a large, premium five-door estate, known in Audi’s range as an Avant. It sits in the UK executive-car market, offering more luggage space than the A6 saloon while retaining a smart, understated look and automatic convenience. With its diesel engine and spacious boot, this A6 Avant suits families, commuters and drivers covering longer distances, especially those wanting comfort and carrying room. S line trim gives it a sportier appearance, while the automatic gearbox makes driving relaxed. It competes with estate versions of the BMW 5 Series and Mercedes-Benz E-Class. Mycarcheck.com records 176 look-ups across 67 distinct cars, a useful snapshot, not a guarantee for every example. Checked cars averaged 131,000 miles, 8,000 miles annually and nearly five previous keepers; average private-sale value was £1,300. Check service history, condition and running costs carefully.