A production version of the GLK goes on sale in January 2009. Pricing has not been announced, but you can expect the C-Class derivative to compete with the BMW X3 and new Land Rover LR2. Assumptions and reports indicate that the GLK will be powered by a 270-horsepower, 3.5-liter V-6 engine mated to the automaker's seven-speed automatic transmission and featuring 4MATIC all wheel drive. The big news, however, is that of a new 2.2-liter, four-cylinder, Bluetec diesel engine introduced with the Vision Concept.