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Pontiac Grand Prix Fuel Economy (L/100km)

L/100km Number of Vehicles
8 liters per 100 kilometers 2 vehicles
9 liters per 100 kilometers 2 vehicles
10 liters per 100 kilometers 2 vehicles
11 liters per 100 kilometers 2 vehicles
12 liters per 100 kilometers 2 vehicles
13 liters per 100 kilometers 2 vehicles
14 liters per 100 kilometers 2 vehicles
15 liters per 100 kilometers 1 vehicles
Model Year Body/Powertrain L/100km  
2005 2005 4dr Sedan 303-hp 5.3L V8 4-sp shiftable automatic FWD 13.2
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With the 226 kilowatts 5.3L V8 engine, 4-speed shiftable automatic transmission, and front-wheel drive, the 2005 Pontiac Grand Prix has been averaging 13.2 L/100km (liters per 100 kilometers).

The 2005 Pontiac Grand Prixs in this analysis were driven mostly on the highway at an average speed of 66 kilometers per hour (about 25 percent of the kilometers driven). The rest of the kilometers were in the city (22.9 percent), in heavy traffic (7.1 percent), and in the suburbs (0 percent).

In addition, the average 2005 Pontiac Grand Prix in this analysis was driven on flat terrain with a medium foot and the AC not used at all.
2005 2005 4dr Sedan supercharged 260hp 3.8L V6 4-sp automatic FWD 8.4
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2005 2005 4dr Sedan 200-hp 3.8L V6 4-sp automatic FWD 10.03
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What Our Members Are Saying about the Real Gas Mileage of the 2005 Pontiac Grand Prix

2005 Pontiac Grand Prix Real Gas Mileage: Pros
YearBody/PowertrainComment
2006 4dr Sedan 200-horsepower 3.8L V6
4-speed automatic FWD		 Good for a speedy V6 and a huge car. see full Pontiac Grand Prix review
2006 4dr Sedan 200-horsepower 3.8L V6
4-speed automatic FWD		 it was listed as being better than the impalla see full Pontiac Grand Prix review
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. see full Pontiac Grand Prix review
2005 Pontiac Grand Prix Real Gas Mileage: Cons
YearBody/PowertrainComment
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...) see full Pontiac Grand Prix review
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. see full Pontiac Grand Prix review
 

2005 Pontiac Grand Prix Gas Mileage (L/100km)

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 L/100km based on how and where you drive a car.