Audi has finally gotten around to serving up details on the company’s 2013 RS4 Avant. Buyers can look forward to plopping their money down on a wagon with a full 450 horsepower served up by a naturally-aspirated 4.2-liter V8 engine. With 317 pound-feet of torque on hand, the German manufacturer says its new long roof can sprint to 60 mph in a mere 4.7 seconds on its way to a top speed of 174 mph. A seven-speed dual-clutch gearbox handles shifting duty, while Quattro all-wheel drive dumps the grunt to the ground. A sport rear differential will also be available to those who plan on doing more than setting grocery run records.