Pontiac G8 GXP come with his performance even more powerful. G8 GT so far as the top model of the series, will be at the end of 2008 become the G8 GXP.

The 4.982 m long, 1.899 meters wide and 1.465

meters high Pontiac G8 GXP, with a wheelbase of 2.915 meters, has a progressive styling, particularly the fall in the split grille and big wheels and huge wheel arches into the eye of the beholder. The dynamic stress large air scoops in the hood, side gills and rear diffuser. For more downforce on the rear axle provides additional rear spoiler lip.

The heart of the new flagship of Pontiac is a 6.2-liter V8 engine is not greater than its 408 horsepower min at 6,000 rpm. The transmission occurs either via a 6-speed automatic or a manual 6-speed manual transmission. The automatic braces 546 Nm torque at 4,400 rpm on the crankshaft, with the manual transmission, it is 542 nm. As a preliminary values for the sprint from 0 to 60 mph (96.56 kph) to give the Americans a time of just 4.7 seconds. The quarter-mile is the Pontiac G8 GXP meet in 13.0 seconds. So that the tires do not jump up in smoke, the sedan is equipped as standard with a locking differential.