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2008 Pontiac G8 Specifications
| | G8 |
G8 |
| General | |
| Driven Wheels | RWD |
| Engine | |
| Powertrain | Internal Combustion |
| Position | Front |
| Configuration | V |
| Cylinders | 6 | 8 |
| Fuel Type | Gasoline |
| Displacement (cc) | 3564 | 5967 |
| Max. Power (bhp) | 256 | 361 |
| Max. Power @RPM | 6300 | 5300 |
| Max. Torque (lbft) | 248 | 385 |
| Max. Torque @RPM | 2100 | 4400 |
| Transmission | |
| Transmission Type | Automatic |
| # Gears (excl Rev) | 5 | 6 |
| Suspension | |
| Type - Front Suspension | MacPherson strut/lower arm |
| Type - Rear Suspension | Multilink |
| Brakes | |
| Type - Front Brakes | Vented Disc |
| Type - Rear Brakes | Vented Disc |
| Fr. Diameter (in) | 11.73 | 12.64 |
| Rr. Diameter (in) | 11.89 | 12.76 |
| ABS | Std |
| Traction Control | Std |
| Stability Control | Std |
| Wheels/Tires | |
| Tire Size F/R | 245/45R18 |
| Vehicle Dimensions | |
| Curb Weight (lb) | 3885 | 3995 |
| Front Track (in) | 62.7 |
| Rear Track (in) | 63.3 |
| Height (in) | 57.7 |
| Length (in) | 196.1 |
| Wheelbase (in) | 114.8 |
| Width (in) | 74.8 |
| Interior Specs | |
| Head Rm F (in) | 38.7 |
| Head Rm 2nd (in) | 38.0 |
| Shlder Rm F (in) | 59.1 |
| Shlder Rm 2nd (in) | 59.1 |
| Hip Room F (in) | 56.7 |
| Hip Room 2nd (in) | 58.0 |
| Leg Room F (in) | 42.2 |
| Leg Room 2nd (in) | 39.4 |
| Seating Positions F | 2 |
| Seating Positions 2nd | 3 |
| Cargo Volume (cu ft) | 17.5 |
| Fuel Economy | |
| EPA City (mpg) | 17 | 15 |
| EPA Hwy (mpg) | 25 | 24 |