he G8 is based on the GM Zeta platform which was created by Holden for the Holden VE Commodore in the Australian market. At the 2007 North American International Auto Show in Detroit, GM chairman Bob Lutz confirmed that GM intended to import Holden Commodores into North America as G8s.[1] The news was not planned to be officially announced until the Chicago Auto Show in February. The G8 is GM's first North American Zeta vehicle. The G8 shares much of its design with the Commodore. The G8 is a captive import of Australia.
The G8 is the first rear-wheel drive Pontiac four door sedan sold in North America since the 1986 Bonneville and Parisienne. However there are also several rear-wheel drive offerings on the road such as the Solstice and the discontinued GTO.
The 2008 G8 is available in two trims: base and GT. The base G8 is available with a 256 hp (191 kW) 3.6 L DOHC VVT V6 engine, standard with a 5-speed automatic. The GT comes with a 361 hp (269 kW)[3] 6.0 L Generation IV V8, featuring a 6-speed automatic and Active Fuel Management, capable of reaching 60 mph (96 km/h) in just over 5 seconds. A 6-speed manual was formerly being considered as an option on the GT model, but Pontiac dropped the option, stating that it would instead be offered as an option on the G8 GXP, which debuted at the 2008 New York International Auto Show, and is scheduled for the 2009 model year. The G8 GXP will feature a 6.2 L V8, similar to the one that first appeared in the 2008 Chevrolet Corvette.[4] Base G8 models come standard with 6 airbags (including full-length side curtain airbags), traction control, stability control, dual tailpipes, 18 inch alloy wheels (fitted with either all-season or summer performance tires), sports body kit, black cloth seats and a 7-speaker audio system, including front center speaker, single-disc CD player, and auxiliary input jack. In addition to the larger engine and 6-speed transmission, GT models also contain additional standard equipment, including quad tailpipes, clear taillight lenses, automatic climate control, a larger center-console display screen, and an 11-speaker Blaupunkt premium audio system with 2 subwoofers, six-disc CD changer, and auxiliary input jack. These features are available as options on the base model. A premium package is also available on both trim levels, which upgrades the black cloth interior to either black leather or two-tone black and red leather. A sunroof is also an available option on both trim levels. A sports package is available on the GT model only, containing 19 inch alloy wheels with summer performance tires, a "sport" steering wheel, and alloy pedals.
all Info used from
http://en.wikipedia.org/wiki/Pontiac_G8