The Alfa Romeo 4C meets the new generation 2013 Porsche Cayman for a battle on the race track. Here are a few technical specifications for both coupes. The 2013 Porsche Cayman is powered by a 2.7-litre 6-cylinder engine that puts out 275 hp. When equipped with the PDK double-clutch transmission, the new 2013 Cayman accelerate from zero to 62 mph (100 km/h) in 5.4 seconds. The Alfa Romeo 4C comes with a 1.7-liter engine that produces 240 hp and 350 Nm of torque. The Alfa 4C requires 4.5 seconds to get from nought to 62 mph (100 km/h).