MERCEDES says the third hybrid model of the new S-Class, the S 500 Plug-in Hybrid, “sets new benchmarks with regard to efficiency as well as drive-system and climate comfort”.

With CO2 emissions of 69 g/km and returning 94.2 mpg the S-Class looks like it will be a luxury saloon that just a few years ago was thought virtually impossible.

In Germany Merc says the S 500 Plug-in Hybrid is referred to as a ‘genuine 3.0-litre car’ – as it can cover 100 kilometres with just three litres of fuel.

The 80-kW electric drive with externally rechargeable battery makes emission-free driving for about 18 miles possible.

It is combined with the new 3.0-litre V6 turbocharged engine. Mercedes-Benz will present the S 500 Plug-in Hybrid at the Frankfurt Motor Show and the market launch will be next year.