The MERCEDES-BENZ S CLASS (2017-20) S450L 4DR SALOON LWB 3.0 SS 389 EU6 AMG LINE PREMIUM PLUS 9G-T+ AUTO is a long-wheelbase, full-size luxury saloon, built for comfort and presence rather than city parking. In the UK market it sits near the top of the executive-car class, competing with the BMW 7 Series and Audi A8. Its extended cabin prioritises rear-seat space and relaxed travel for passengers. mycarcheck.com records 11 look-ups across six VINs, a modest sample. Average private-sale valuation was £30,000; mileage averaged 68,000, with 8,000 miles yearly and 0.73 previous keepers. It suits executives, chauffeur use and buyers wanting serene long-distance travel, though its size and ownership costs can challenge urban drivers and tighter budgets. AMG Line styling gives this S-Class a sportier edge, while Premium Plus equipment and the automatic gearbox reinforce its luxury feel. Its appeal is the blend of performance, rear-seat comfort and prestige; unlike sportier rivals, it prioritises effortless refinement. Check service history, condition and running costs before buying.