The latest generation W204 Mercedes-Benz C-Class has been on sale since 2007 and is now due for its mid-cycle facelift. As this computer generated rendering suggests, Mercedes-Benz designers won’t be mucking around with the stylish look of the current model, instead choosing to focus on only minor changes such as new bumper, headlight and wheel designs.

Besides the styling changes to the exterior, there will almost certainly be some updates to the interior and a number of mechanical changes. The latter will likely include modifications intended to improve the efficiency of the C-Class and boost Mercedes’ fleet wide fuel economy and emissions averages.

Some of the changes will likely include the addition of new BluTec diesel powertrains and engine stop-start systems, as well as more direct-injected models.

Like previous updates, the new changes will be incorporated across the C-Class range but there may also be a major shift in the lineup--the addition of a new C-Class Cabrio and Coupe.

Also in the works is a new Estate model, though it’s arrival in the U.S. is unlikely.As for the Estate wagon, Mercedes-Benz spokespeople have confirmed to TheCarConnection that there are no plans to bring this particular model to the U.S. although we will still get the bigger 2011 E-Class Estate. Mercedes-Benz brought the C-Class wagon to the U.S. from 2002 through 2005, but it was a slow-seller and the current version never made it.

Expect to see the facelifted 2010 Mercedes-Benz C-Class make its world debut at the 2009 Los Angeles Auto Show in December or at the 2010 Detroit Auto Show one month later.