WITH ITS SHOWROOM debut expected to fall around the middle of 2011, a heavily camouflaged prototype of the 2012 Mercedes-Benz ML-Class has been spied testing on the roads of Germany.

While the wheelbase appears more or less unchanged from the current model, shorter overhangs front and back point to a slightly more compact body than the 2009 ML-Class.

The camouflage obscures virtually all of the next-gen ML’s finer details, although it’s clear that the prototype shares a roof and beltline similar to that of the 2009 model.

Reports out of Europe suggest that the new ML-Class will include a diesel-electric hybrid in its line-up, while a petrol-electric hybrid Mercedes is expected to land before the end of 2009.

To keep development and production costs down, the 2012 ML-Class is likely to share many of its components and underpinnings with R-Class and G-Class models.

To help it achieve a greener image and meet strict European standards, the new ML is expected to offer a 2.2 litre four-cylinder diesel engine developing 152kW, while a 168kW V6 diesel and a 248kW petrol V6 will likely round out the engine options.

For performance buyers, the AMG model should feature direct-injection and forced induction by way of a pair of turbochargers, delivering upwards of 425kW.

GALLERY » 2010 Mercedes-Benz ML-Class Spy Shots