According to Car and Driver, the four- and six-cylinder engines found under the coupe's newly designed hood are coming in for significant upgrades. The 3.8-liter Lambda V6 now uses direct-injection technology (just like in the updated 2012 Genesis sedan), but instead of matching the four-door's 333 horsepower and 291 pound-feet of torque, Hyundai has further massaged this engine to the tune of 345 hp and 295 lb-ft of twist. That means the Korean coupe will put down more horsepower than many of its American and Japanese six-cylinder rivals, specifically the Ford Mustang, Chevrolet Camaro and Nissan 370Z.
There's good news for turbo-four enthusiasts, as well. Hyundai's 2.0-liter inline-four receives a new twin-scroll turbo unit and an upgraded intercooler, meaning there's now 271 hp and 275 lb-ft of torque on tap. Both the four- and six-cylinder engines are now available with eight-speed automatic transmissions, but those who prefer to row their own gears will almost certainly still be able to opt for a six-speed manual gearbox with either engine. Check out Car and Driver for more details and sit tight for the 2013 Genesis Coupe's official debut at January's Detroit Auto Show.