The Pontiac G8 gas mileage is 16.5 to 21 miles per gallon as specified in our data below, organized by trim, option package, and model year.
For example, the 2009 Pontiac G8 GXP trim model has a combined gas mileage of 16.5 miles per gallon, while the 2009 Pontiac G8 has a combined gas mileage of 21 miles per gallon.
In the city, the G8 gas mileage is 13 to 17 miles per gallon depending on the trim and model year.
On the highway, the G8 gas mileage is 20 to 25 miles per gallon depending on the trim and model year.
Note: The gas mileage shown for hybrid vehicles is the miles per gallon equivalent.
Check out the Gas Mileage specifications for other makes and models.
2009 Pontiac G8 Gas Mileage
Depending on trim level, the 2009 Pontiac G8 gas mileage is from 16.5 to 21 miles per gallon combined.
In the city, the 2009 G8 gas mileage is from 13 to 17 miles per gallon, depending on the trim.
On the highway, the 2009 G8 gas mileage is from 20 to 25 miles per gallon, depending on the trim.
2009 Pontiac G8 Gas Mileage (Imperial)
| Trim |
Engine | Transmission | Drivetrain |
City | Highway | Combined Mileage |
| GXP Sedan |
6.2L | V8 | SFI ALUMINUM (415 HP [309.4 KW] @ 5900 RPM 415LBFT OF TORQUE [560.2 N-M] @ 4600 RPM) | 6 Spd Auto With Driver Shift Control And Sport Mode | RWD |
13 city mpg | 20 hwy mpg | 16.5 combined mpg |
| GT Sedan |
6.0L | V8 | SFI ALUMINUM WITH ACTIVE FUEL MANAGEMENT | 6 Spd Auto With Driver Shift Control And Sport Mode | RWD |
15 city mpg | 24 hwy mpg | 19.5 combined mpg |
| Sedan |
3.6L | V6 | VARIABLE-VALVE TIMING DOHC SFI ALUMINUM | 5 Spd Auto With Driver Shift Control And Sport Mode | RWD |
17 city mpg | 25 hwy mpg | 21 combined mpg |
2009 Pontiac G8 Gas Mileage (Metric)
| Trim |
Engine | Transmission | Drivetrain |
City | Highway | Combined Mileage |
| GXP Sedan |
6.2L | V8 | SFI ALUMINUM (415 HP [309.4 KW] @ 5900 RPM 415LBFT OF TORQUE [560.2 N-M] @ 4600 RPM) | 6 Spd Auto With Driver Shift Control And Sport Mode | RWD |
18.0 city L/100 km | 12.0 hwy L/100 km | 14.0 combined L/100 km |
| GT Sedan |
6.0L | V8 | SFI ALUMINUM WITH ACTIVE FUEL MANAGEMENT | 6 Spd Auto With Driver Shift Control And Sport Mode | RWD |
16.0 city L/100 km | 10.0 hwy L/100 km | 12.0 combined L/100 km |
| Sedan |
3.6L | V6 | VARIABLE-VALVE TIMING DOHC SFI ALUMINUM | 5 Spd Auto With Driver Shift Control And Sport Mode | RWD |
14.0 city L/100 km | 9.0 hwy L/100 km | 11.0 combined L/100 km |
2008 Pontiac G8 Gas Mileage
Depending on trim level, the 2008 Pontiac G8 gas mileage is from 19.5 to 21 miles per gallon combined.
In the city, the 2008 G8 gas mileage is from 15 to 17 miles per gallon, depending on the trim.
On the highway, the 2008 G8 gas mileage is from 24 to 25 miles per gallon, depending on the trim.
2008 Pontiac G8 Gas Mileage (Imperial)
| Trim |
Engine | Transmission | Drivetrain |
City | Highway | Combined Mileage |
| GT Sedan |
6.0L | V8 | SFI ALUMINUM WITH ACTIVE FUEL MANAGEMENT | 6 Spd Auto With Driver Shift Control And Sport Mode | RWD |
15 city mpg | 24 hwy mpg | 19.5 combined mpg |
| Sedan |
3.6L | V6 | VARIABLE VALVE TIMING DOHC SFI ALUMINUM | 5 Spd Auto With Driver Shift Control And Sport Mode | RWD |
17 city mpg | 25 hwy mpg | 21 combined mpg |
2008 Pontiac G8 Gas Mileage (Metric)
| Trim |
Engine | Transmission | Drivetrain |
City | Highway | Combined Mileage |
| GT Sedan |
6.0L | V8 | SFI ALUMINUM WITH ACTIVE FUEL MANAGEMENT | 6 Spd Auto With Driver Shift Control And Sport Mode | RWD |
16.0 city L/100 km | 10.0 hwy L/100 km | 12.0 combined L/100 km |
| Sedan |
3.6L | V6 | VARIABLE VALVE TIMING DOHC SFI ALUMINUM | 5 Spd Auto With Driver Shift Control And Sport Mode | RWD |
14.0 city L/100 km | 9.0 hwy L/100 km | 11.0 combined L/100 km |
Pontiac G8 Gas Mileage Data Brought To You By AutoPadre
Pontiac G8 Gas Mileage Comparisons By Year