2012 Porsche Panamera GTS

Hardcore Porsche fans may scoff at a hulking four-door sedan like the Panamera, just as they did with the Cayenne SUV, yet the truth is certain. The impressive sales of these two models is the reason Porsche can afford to keep tinkering with its two-door sports cars. With the Panamera GTS, Porsche hopes to create the best of both worlds: a muscled, V-8 behemoth that can hit 178 miles per hour while seating five in complete comfort.

The combination of 430 horsepower, a 7-speed dual-clutch transmission, and all-wheel-drive gets the GTS to 60 miles per hour in just 4.3 seconds. Rounding out the performance are stiffer shocks, a lower ride height, and red brake calipers.