Pontiac Grand Prix Gas Mileage (MPG)
Unlike other fuel economy surveys, TrueDelta's Real-World Gas Mileage Survey includes questions about how and where a car was driven. So you can get an idea of the Pontiac Grand Prix's real-world MPG based on how and where you drive a car.
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Pontiac Grand Prix
Pontiac Grand Prix Gas Mileage
| Year | Body/Powertrain | flat, hilly, or mountainousLand | driving style: very light to "lead foot"Foot | A/C use: none to heavyA/C | constant stop and goTraf % | many stops per mileCity % | stop every mile or twoSub % | fairly steady speedHwy % | Hwy Spd | MPG |
| 2008 | 4dr Sedan 303-horsepower 5.3L V8 4-speed shiftable automatic FWD |
flat | med | none | 8 | 42 | 33 | 17 | 60 | 18.1 |
| flat | med | none | 8 | 42 | 33 | 17 | 60 | 19.5 | ||
| flat | med | none | 8 | 42 | 33 | 17 | 60 | 20.7 | ||
| flat | med | none | 8 | 42 | 33 | 17 | 60 | 19.5 | ||
| flat | med | none | 8 | 42 | 33 | 17 | 60 | 18.5 | ||
| 2008 | 4dr Sedan 303-horsepower 5.3L V8 4-speed shiftable automatic FWD |
flat | med | none | 8 | 42 | 33 | 17 | 60 | 19.3 |
| Averages | flat | med | none | 8 | 42 | 33 | 17 | 60 | 19.3 | |
| With the 303-horsepower 5.3L V8 engine, 4-speed shiftable automatic transmission, and front-wheel drive, 2008 Pontiac Grand Prix fuel economy has been averaging
19.3 MPG (miles per gallon). The 2008 Pontiac Grand Prixs in this analysis were driven mostly in the city (about 42 percent of the miles driven). The rest of the miles were in the suburbs (33 percent), on the highway at an average speed of 60 miles per hour (17 percent), and in heavy traffic (8 percent). In addition the average 2008 Pontiac Grand Prix in this analysis was driven on flat terrain with a medium foot and the AC not used at all. |
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What Our Members Are Saying about the Real Pontiac Grand Prix MPG
| Pontiac Grand Prix Fuel Economy: Pros | ||
| Year | Body/Powertrain | Comment |
| 2006 | 4dr Sedan 200-horsepower 3.8L V6 4-speed automatic FWD |
Good for a speedy V6 and a huge car. |
| 2006 | 4dr Sedan 200-horsepower 3.8L V6 4-speed automatic FWD |
it was listed as being better than the impalla |
| 2005 | 4dr Sedan 200-horsepower 3.8L V6 4-speed automatic FWD |
Thus far, I have averaged 23 and 26 mpg, both times have had roughly a 70 mile highway trip out of 200 miles. Overall, I find this to be acceptable. |
| 2002 | 4dr Sedan 200-horsepower 3.8L V6 4-speed automatic FWD |
HORRIBLE. 12-16mpg combined with both city and driving. |
| 2002 | 4dr Sedan supercharged 240hp 3.8L V6 4-speed automatic FWD |
BEFORE the switch to ethanol-mixed fuel, my supercharged V6 averaged 22mpg, getting 19 city and a staggering 34 highway. If you do long highway miles and want more comfort than any econo-box can offer, this is the car for you! |
| Pontiac Grand Prix Fuel Economy: Cons | ||
| Year | Body/Powertrain | Comment |
| 2006 | 4dr Sedan 303-horsepower 5.3L V8 4-speed shiftable automatic FWD |
Great V8 exhaust note and instant acceleration comes at the cost of about 19 mpg in combined driving, versus 25 with my new car. That is a 30% increase. (the new car is 600 pounds lighter though...) |
| 2005 | 4dr Sedan 303-horsepower 5.3L V8 4-speed shiftable automatic FWD |
17-19 mpg in the city. 25 If I drive on the intersate. 30 is possible at 60mph. Most of my driving is in the city. The beautiful v8 makes it impossible to stay out of the gas, but it can run on REG fuel. |
