2009 MERCEDES-BENZ C350

The C300 is powered by a turbocharged 4-cylinder engine displacing 2.0L and making a stout 241 horsepower Fuel economy in the C300 is rated at 25 on the highway and 34 in the city. The C300 is the least-potent C-Class, but it still offers 255 horsepower from a 2.0-liter four-cylinder engine. The shift logic of the Mercedes 9-speed automatic makes most of the engines low-end grunt.