The F-type R coupe, powered by a 550-hp supercharged V-8, is also quicker than either of those PDK-equipped Porsches. At 3.5 seconds to 60 mph, this Jag is a tenth of a second quicker than one of the 911s and a half-second quicker than the other. The Jag clings to the skidpad with 1.00 g of grip, just as tenacious as the Porsches. And it stops from 70 mph in 151 feet, only three or four feet longer than the Carreras. This lusty little coupe is every bit the performance car its German rival is. And yet, one could accuse the Jag of two sports-car sins. At 3917 pounds, this two-seater is more than 600 pounds heavier than a similarly sized Carrera S. That’s a lot of aluminum, the primary material in the structure. The R coupe’s weight is a large part of the reason that it needs an extra two cylinders and a supercharger to achieve its superior acceleration numbers.