The current S-Class is the tenth generation of its kind, but only the seventh to be labelled S-Class. That term arrived in 1972 with the model codenamed W116, which peaked as the mighty air-sprung 450 SE 6.9.
Next in line was the late Bruno Sacco’s masterpiece, the beautifully proportioned W126, of which 818,036 were produced. Its replacement, the almost grotesquely ostentatious cathedral-size W140, found only 406,532 takers, making it the least successful post-war Merc flagship.
The W220 that followed (1998-2005), in essence a blown-up version of the marque’s lesser saloons, went heavy on tech, bling and power, but the interior in particular marked an all-time low in terms of perceived quality. The evolutionary fifth-gen S-Class (W221, 2005-2013) had some marginally more economical Blue Efficiency models including the S250 CDI with a four-cylinder…