Mercedes-Benz S-Class plug-in hybrid coming to Frankfurt - Autoblog Both Porsche (see other thread) and Mercedes are touting 20 miles AER on their PHVs (Autoblog got 24 miles on the Porsche Panamera S e-Hybrid). Toyota's 11 AER EPA rating seems a little weak in comparison.
If one looks at the numbers, regular hybrids of the same car sold this past June 2013, the number of their correspondent plug-ins should be expected to be even lower. Cayenne Hybrid 62 E400H 23 LS 600h 10 S400HV Hybrid 5 Porsche Panamera S Hybrid 4 7-Series ActiveHybrid 2
all these plugins are done because it lowers cars average consumption, which lowers their CO2, which then significantly lowers their taxes in some countries