A 2.0-liter turbocharged four-cylinder pairs with either rear-wheel drive or 4MATIC all-wheel drive. Vibrations are restrained and the soundtrack is subdued and refined. But it doesn’t rev with much enthusiasm and feels slower than its rated 241 horsepower and 273 lb-ft of torque. Like its four-door sibling, we expect the C300 coupe to be a few tenths behind its quickest competition with a predicted zero-to-60 time of just over six seconds.