2.0-liter 4-cylinder engine that makes 241 horsepower and 273 lb.-ft. of torque. The C350's 3.5-liter V-6 makes 302 horsepower and 273 lb.-ft. of torque. The C400's engine is a turbocharged 3.0-liter V6 that cranks out 329 horsepower and 354 lb.-ft. of torque. The C63 AMG sed...