The MERCEDES-BENZ S CLASS (1999-06) S350 4DR LIMOUSINE 3.8 AUTO REV 05 is a large, four-door luxury saloon, designed to make long journeys comfortable rather than to be a small, economical runabout. In the UK used-car market, it sits among executive flagships, alongside rivals such as the BMW 7 Series and Audi A8. mycarcheck.com records just one lookup for this exact model, covering one VIN, so its figures are a snapshot rather than a reliable market-wide picture. That record shows an average private-sale valuation of £1,100, mileage of 180,000 miles, annual mileage of 5,000 miles, and seven previous keepers. It suits buyers seeking spacious, refined chauffeur-style travel, special occasions or motorway trips, rather than first-time drivers focused on low costs. Its cabin and smooth automatic feel are attractions, while age, fuel use and upkeep call for checks. Against mainstream saloons, it offers more presence and comfort, but can cost more to own.