The AUDI A6 (2004-09) 4DR SALOON 3.2 FSI S LINE MTRON AUTO is a large, premium four-door saloon, aimed at buyers wanting more space and comfort than a family hatchback. In the UK used-car market, it sits alongside the BMW 5 Series and Mercedes-Benz E-Class, offering understated style and a substantial, refined feel. The 3.2-litre petrol engine and automatic gearbox make this A6 suited to relaxed longer journeys, business travel and comfortable family trips rather than low-cost city motoring. S Line trim adds a sportier look, while the cabin, generous room and composed road manners are key attractions. It feels more powerful and plush than many mainstream saloons, though running costs may be higher. mycarcheck.com recorded nine look-ups across three VINs, so figures are indicative, not a broad survey: average valuation £1,500, mileage 106,000 and 3,000 miles yearly; owners averaged 4.8 previous keepers when checked, making history checks worthwhile for buyers.