Mercedes-Benz first hinted in the launch of your S Class with plug-in hybrid capability as far back as 2009 when it unveiled the Vision S500 Plug-In Hybrid concept. The best part was that it was destined for production, despite the fact that here was actually a full-size luxury sedan capable of -60 mph runs in under 6. seconds and gas mileage of 70 mpg or better.

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

The news was basically reported by Car Sales, citing information revealed by Mercedes spokesman David McCarthy in Australia.