A Mercedes-Benz C-Class plug-in hybrid prototype has been spied undergoing testing as the German marque prepares to roll out its third hybridized car later this (or early next) year. Following the E400 hybrid and borrowing technology from the recently revealed S-Class Plug-In Hybrid, the C Hybrid will feature a 211-hp turbocharged four-pot (the S-Class utilizes a turbo V6) working in parallel with an electric motor integrated with the transmission that provides an additional 70 horses.

The car will offer various driving modes including full-electric, hybrid and gas-only. The car is set to be badged the C350 Plug-In Hybrid and will be differentiated by a charge port on the rear bumper and an "active" grill shutter for improved aerodynamics. When it hits showrooms next year, expect the plug-in C-Class to carry a sticker price a few thousand dollars over that of the C's $38k base price.