It's official: The Peugeot 508 RXH diesel-electric hybrid will debut at the 2011 Frankfurt International Auto Show in September and is set to bump heads with Audi's A4 Allroad Quattro. The comparisons between the Audi A4 Allroad Quattro and the 508 RXH aren't without reason, as they both feature raised suspensions and share roughly the same dimensions. The Peugeot has distinct styling, however, with a new front bumper and three vertical LED lights on the sides and chrome roof rails.

The car gives off a rugged look which can be attributed to larger 18-inch wheels and sill moldings around the wheel arch. The 508 RXH also features electronic front seats, a heads up display, panoramic glass roof, Open & Go keyless system, tinted windows and a navigation system. Based on Peugeot's mid-size wagon model, the 508 RXH crossover differentiates itself from the rest of the Peugeot outdoor line by running the Hybrid4 2.0-liter turbo HDi diesel-electric all-wheel-drive drivetrain. The engine comes with a 163hp turbo that drives the front wheels and a 37hp electric motor that powers the rear wheels for a max output of 200hp and 331.9 lb-ft of torque.

The all-wheel-drive mode can be switched over to a pure electric mode that puts out zero emissions. Fuel economy is also important for the 508 RXH, averaging 55.9mpg on the U.S. cycle (67.2mpg UK) with CO2 emissions of only 109g/km. No performance or pricing has been announced yet, however the 508 RXH is expected to go on sale across Europe in spring 2012. No word on whether it will be available in the U.S. though it doesn't look likely.