Just last month we speculated that the Mercedes-Benz C300 4Matic could be getting a new engine, specifically a de-tuned 3.5-liter V-6 that could be shared with an entry-level  E Class sedan.

We still don’t have news on the rumored new E300, but Mercedes-Benz has confirmed that 2013 C300 4Matic models will benefit from a direct-injection 3.5-liter V-6, good for 248 horsepower and 251 pound-feet of torque. That’s a considerable jump from last year’s 3.0-liter V-6, which produced 228 horsepower and 221 pound-feet of torque.

While Mercedes-Benz hasn’t published fuel economy numbers just yet, the addition of ECO Start/Stop (and gasoline direct injection) tells us to expect slightly better numbers than last year’s 17 mpg city and 24 mpg highway.

The same 3.5-liter V-6 is used to power the C350 Coupe and C350 Sport Sedan, where it’s tuned to produce 302 horsepower and 273 pound feet of torque. It also sees duty in the E350 models, with the same level of output.

Mercedes-Benz has made some expansive changes to its lineup for 2013, in an effort to both modernize product and attract new customers. Look for a serious increase in new models to hit U.S. dealers in coming years, too, as Mercedes Benz introduces the new A Class, B Class and CLA sedan.