2014 Mercedes S500 Plug-in Hybrid Has Speed and MPGs By Jason Siu Aug 20 2013 Share this Article Tweet Mercedes-Benz has officially unveiled its 2014 S500 Plug-in Hybrid, ahead of the sedan’s official debut at the 2013 Frankfurt Motor Show. Continue Reading... Filed under: Auto Show News Family Sedans Featured Articles German Hybrids Luxury Cars Mercedes-Benz SedansTags: 2013 frankfurt auto show, 2013 frankfurt motor show, 2014 s500 plug-in hybrid, Hybrids, luxury hybrids, Mercedes, mercedes s500, mercedes s500 plug-in hybrid, Mercedes-Benz, Mercedes-Benz S500, mercedes-benz s500 plug-in hybrid, phev