The 508 will likely share most of its underpinnings with the Citroen C5 and be powered by range of engines, starting with a gasoline 1.6-liter inline-four,and topping out with a 3.0-liter 240-horsepower diesel V6. The 508 is also expected to be available with Peugeot's new Hybrid4 through-the-road hybrid system.
This uses an internal combustion engine with a conventional transmission at the front wheels and an electric motor and battery for the rear axle. It's mechanically simpler than power-split systems like those from Toyota, and it offers on-demand all-wheel-drive.
[Source: Autoblog.IT, 1Minutocoches]