The MERCEDES-BENZ S CLASS (2006-09) S320 4DR SALOON 3.0 CDI AUTO is a full-size luxury saloon designed to put comfort and refinement ahead of compact-car practicality. In the UK, it sits near the top of the executive car market, offering generous space and a prestigious alternative to mainstream family cars. It suits chauffeur-style travel and long journeys, with room for rear passengers and family trips. Its size and upkeep may feel excessive for city errands or first-time drivers. Mycarcheck.com logged 4,383 checks across 1,488 VINs; average private-sale value was £4,700. Recorded averages were 119,000 miles, 6,000 miles annually and 4.7 previous keepers. The 3.0 CDI diesel pairs relaxed power with better long-distance economy than many petrol luxury saloons, while the S-Class is known for its plush ride, quiet cabin and imposing presence. Against BMW 7 Series and Audi A8, it prioritises comfort over sportiness. A well-kept example makes luxury attainable.