The current-generation Mercedes-Benz GLK is a bit of an oddball, even in the "we'll-take-anything" crossover segment. But with a new model under works that's set to be released next year, possibly followed by a 3-door version, it seems that the company's AMG division is working on a version of its own. According to Car and Driver, the GLK63 will new car feature the division's new twin-turbo 4.0-liter V8, an option not previously available with its larger 5.5- and 6.2-liter engines of the past.

While smaller in displacement, the new M178 engine should deliver an impressive 455 horsepower in base models, with output climbing to 503 in the upgraded GTS. The next GLK (pictured here in non-AMG guise) is expected to hit showrooms in late 2015 as a 2016 model, with the AMG model to follow at a later stage.