Recently an interesting Porsche Macan prototype was spied during testing on the Nurburgring Nordschleife race track in Germany. Our sources speculate this this could be the future Turbo S version of the Macan. If this is the case, the Porsche Macan Turbo S is going to be powered by a 3.6-liter V6 biturbo engine that develops more than 400 hp and 580 Nm of torque.