The 2008 Pontiac G6 GXP is equipped with a 3.6 liter DOHC V-6 VVT engine that that develops around 252 hp (188 kW) and 251 lb.-ft. of torque (341 Nm). The 2008 Pontiac G6 GXP has a Hydra-Matic 6T70 6 speed automatic transmission, a performance tuned suspension. The 2008 Pontiac G6 GXP sits on 18-inch wheels and has a specific exterior and interior styling. Click here to read more.. »