The Pontiac G8 shares its basic design with large cars from GM’s Australian Holden subsidiary. The G8 is available in Base and GT trims. The Base offers a 256-hp 3.6-liter V6 while the GT has a 361-hp 6.0-liter V8. A 5-speed automatic transmission is standard on the Base, and a 6-speed automatic is standard on the GT. Exterior appearance is similar for both models, with the most obvious differences being chrome-trimmed door handles, clear tail lamp lenses, and four exhaust tips on the GT. The GXP has a 415-hp 6.2-liter V8 and a 6-speed automatic transmission. A 6-speed manual is optional. GXP has a performance suspension, 19-inch wheels, and unique exterior styling.
