2004 Porsche 911 GT3

The GT3 is an overachieving sports car. On paper, it should have trailed its two competitors in every performance test. It has the poorest power-to-weight ratio here, with each of its 380 ponies burdened by 8.5 pounds, 15 percent more than the Ferrari's 425 horses are saddled with. But this is one scrappy car.
It shadowed the more powerful and lighter Ferrari in nearly every acceleration test. The two ran side by side to 60 mph (4.0 seconds) and to 150 (23.9) and were just about equal in the quarter-mile with the Porsche hitting 114 mph in 12.3 seconds and the Ferrari at 115 mph in 12.4.
We loved the GT3's aluminum flat-six engine. Its guttural growl provided a wonderful race-car soundtrack, and it revved freely to its 8200-rpm redline. Even though the peak torque of 284 pound-feet occurs at a fairly high 5000 rpm, there's still plenty of grunt at lower rpm, and the throttle response is prompt.
We weren't so thrilled with the shifting action of the six-speed manual transmission. Our test car had a rubbery linkage that didn't provide a clear path through the gears. We had to be very deliberate with the shifts, and that extra effort probably cost the GT3 a 10th or so in the acceleration times.
No time was lost on the skidpad as the GT3 pulled an astonishing 1.03 g, a figure that's been bested by only one other street car, the $659,000 Ferrari Enzo. The Stradale and the GT trailed the Porsche by 0.05 g.