Specs - 2009 Pontiac G8 Technical Specifications
| Brakes | BASE | GT | GXP |
|---|
| Brake ABS System | 4-Wheel | 4-Wheel | 4-Wheel |
| Disc - Front (Yes or ) | Yes | Yes | Yes |
| Disc - Rear (Yes or ) | Yes | Yes | Yes |
| Front Brake Rotor Diam x Thickness (in) | 11.73 x - TBD - | 12.64 x - TBD - | 12.64 x - TBD - |
| Rear Brake Rotor Diam x Thickness (in) | 11.89 x - TBD - | 12.76 x - TBD - | 12.76 x - TBD - |
| Cargo Area Dimensions | BASE | GT | GXP |
|---|
| Trunk Volume (ft³) | 17.5 | 17.5 | 17.5 |
| Engine | BASE | GT | GXP |
|---|
| Displacement | 3.6L/217 | 6.0L/364 | 6.2L/- TBD - |
| Engine Type | Gas V6 | Gas V8 | Gas V8 |
| SAE Net Horsepower @ RPM | 256 @ 6300 | 355 @ 5300 | 415 @ 5900 |
| SAE Net Torque @ RPM | 248 @ 2100 | 384 @ 4400 | 415 @ 4600 |
| Exterior Dimensions | BASE | GT | GXP |
|---|
| Height, Overall (in) | 57.7 | 57.7 | 57.7 |
| Length, Overall (in) | 196.1 | 196.1 | 196.1 |
| Min Ground Clearance (in) | - TBD - | - TBD - | - TBD - |
| Wheelbase (in) | 114.8 | 114.8 | 114.8 |
| Width, Max w/o mirrors (in) | 74.8 | 74.8 | 74.8 |
| Fuel Tank | BASE | GT | GXP |
|---|
| Fuel Tank Capacity, Approx (gal) | 19.0 | 19.0 | 19.0 |
| Steering | BASE | GT | GXP |
|---|
| Lock to Lock Turns (Steering) | 2.8 | 2.8 | 2.8 |
| Steering Type | Pwr Rack & Pinion | Pwr Rack & Pinion | Pwr Rack & Pinion |
| Turning Diameter - Curb to Curb (ft) | 37.4 | 37.4 | 37.4 |
| Suspension | BASE | GT | GXP |
|---|
| Suspension Type - Front | Performance | Performance | Performance |
| Suspension Type - Rear | Performance | Performance | Performance |
| Suspension Type - Rear (Cont.) | 4-link independent | 4-link independent | 4-link independent |
| Tires | BASE | GT | GXP |
|---|
| Front Tire Size | P245/45R18 | P245/45R18 | P245/40R19 |
| Rear Tire Size | P245/45R18 | P245/45R18 | P245/40R19 |
| Transmission | BASE | GT | GXP |
|---|
| Drivetrain | Rear Wheel Drive | Rear Wheel Drive | Rear Wheel Drive |
| Trans Description Cont. | Automatic w/OD | Automatic w/OD | Automatic w/OD |
| Trans Type | 5 | 6 | 6 |
| Vehicle | BASE | GT | GXP |
|---|
| Front Head Room (in) | 38.7 | 38.7 | 38.7 |
| Front Leg Room (in) | 42.2 | 42.2 | 42.2 |
| Front Shoulder Room (in) | 59.1 | 59.1 | 59.1 |
| Passenger Capacity | 5 | 5 | 5 |
| Passenger Volume (ft³) | 107.0 | 107.0 | 107.0 |
| Second Head Room (in) | 38.0 | 38.0 | 38.0 |
| Second Leg Room (in) | 39.4 | 39.4 | 39.4 |
| Second Shoulder Room (in) | 59.1 | 59.1 | 59.1 |
| Weight Information | BASE | GT | GXP |
|---|
| Base Curb Weight (lbs) | 3885 | 3995 | 4050 |