The MERCEDES-BENZ E CLASS (2006-09) E320 4DR SALOON 3.0 CDI AVANTGARDE AUTO is a large, upmarket four-door diesel saloon, positioned above mainstream family cars. It is well suited to commuting, business travel and family journeys, offering a spacious cabin and an easy-going automatic drive. The mycarcheck.com data reflects strong interest: 741 checks covered 309 distinct VINs. Recorded cars averaged 128,000 miles and around 4.7 previous keepers, with annual mileage averaging 7,000. The average private-sale valuation was £2,500. These are guide figures from checked vehicles, not a price promise, so assess each car’s history, condition and mileage individually. This E320 pairs a 3.0-litre diesel with the comfort expected of a Mercedes executive saloon. Avantgarde trim adds distinction, while relaxed cruising makes it a rival to the BMW 5 Series and Audi A6. It suits regular longer journeys and drivers who value comfort and presence, though check each older, high-mileage example carefully.