Mercedes-Benz first hinted at the launch of an S Class with plug-in hybrid capability as far back as 2009 in the event it unveiled the Vision S500 Plug-In Hybrid concept. The good thing was that it was destined for production, though here was a full-size luxury sedan capable of -60 mph runs within 6. seconds and gas mileage of 70 mpg or better.

Now we know if we will finally see the production Mercedes-Benz S Class plug-in hybrid: at September’s 2013 Frankfurt Auto Show.

This news was first reported by Car Sales, citing information revealed by Mercedes spokesman David McCarthy around Australia.