MENU
1 0 3 4 3 4

We are 103,000+ car owners sharing real-world car information.

Join Us

Pontiac G8 vs. Pontiac Grand Prix MPG

Chart is based on 201 fuel economy reports for the Pontiac G8 and 102 fuel economy reports for the Pontiac Grand Prix.

Pontiac G8 MPG

Pontiac G8 Pontiac G8 2009 18.0 MPG Highway Percentage 61 percent Pontiac G8 Pontiac G8 2009 18.6 MPG Highway Percentage 68 percent Pontiac G8 Pontiac G8 2009 21.0 MPG Highway Percentage 30 percent Pontiac G8 Pontiac G8 2008 18.5 MPG Highway Percentage 52 percent Pontiac G8 Pontiac G8 2008 19.1 MPG Highway Percentage 69 percent
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
2009 4dr Sedan 415-horsepower 6.2L V8
6-speed manual RWD		 hills lead light 10 14 16 61 75 18.0  
2009 4dr Sedan 361-horsepower 6.0L V8
6-speed shiftable automatic RWD		 flat light light 3 21 9 68 63 18.6  
2009 4dr Sedan 256-horsepower 3.6L V6
5-speed shiftable automatic RWD		 flat med light 2 10 58 30 65 21.0  
2008 4dr Sedan 361-horsepower 6.0L V8
6-speed shiftable automatic RWD		 flat med none 10 21 16 52 75 18.5  
2008 4dr Sedan 256-horsepower 3.6L V6
5-speed shiftable automatic RWD		 flat med none 0 0 31 69 60 19.1  

Return to top

This page shows only averages. See all the Pontiac G8 fuel economy data.

Pontiac Grand Prix MPG

Pontiac Grand Prix Pontiac Grand Prix 2008 20.0 MPG Highway Percentage 21 percent Pontiac Grand Prix Pontiac Grand Prix 2008 20.5 MPG Highway Percentage 0 percent Pontiac Grand Prix Pontiac Grand Prix 2007 19.7 MPG Highway Percentage 50 percent Pontiac Grand Prix Pontiac Grand Prix 2007 23.7 MPG Highway Percentage 53 percent Pontiac Grand Prix Pontiac Grand Prix 2006 20.8 MPG Highway Percentage 33 percent Pontiac Grand Prix Pontiac Grand Prix 2006 18.4 MPG Highway Percentage 45 percent Pontiac Grand Prix Pontiac Grand Prix 2006 24.4 MPG Highway Percentage 49 percent Pontiac Grand Prix Pontiac Grand Prix 2005 28.0 MPG Highway Percentage 95 percent Pontiac Grand Prix Pontiac Grand Prix 2005 17.9 MPG Highway Percentage 25 percent Pontiac Grand Prix Pontiac Grand Prix 2005 23.5 MPG Highway Percentage 45 percent Pontiac Grand Prix Pontiac Grand Prix 2004 20.6 MPG Highway Percentage 28 percent Pontiac Grand Prix Pontiac Grand Prix 2004 19.6 MPG Highway Percentage 20 percent Pontiac Grand Prix Pontiac Grand Prix 2004 27.5 MPG Highway Percentage 70 percent Pontiac Grand Prix Pontiac Grand Prix 2003 22.4 MPG Highway Percentage 34 percent Pontiac Grand Prix Pontiac Grand Prix 2003 26.1 MPG Highway Percentage 1 percent Pontiac Grand Prix Pontiac Grand Prix 2002 22.4 MPG Highway Percentage 23 percent Pontiac Grand Prix Pontiac Grand Prix 2002 20.9 MPG Highway Percentage 3 percent Pontiac Grand Prix Pontiac Grand Prix 2002 21.4 MPG Highway Percentage 56 percent Pontiac Grand Prix Pontiac Grand Prix 2001 24.3 MPG Highway Percentage 83 percent Pontiac Grand Prix Pontiac Grand Prix 2001 31.0 MPG Highway Percentage 99 percent Pontiac Grand Prix Pontiac Grand Prix 2001 28.1 MPG Highway Percentage 95 percent Pontiac Grand Prix Pontiac Grand Prix 2000 24.5 MPG Highway Percentage 85 percent
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 7 39 32 21 61 20.0  
2008 4dr Sedan 200-horsepower 3.8L V6
4-speed automatic FWD		 hills light hvy 0 0 100 0 N/A 20.5  
2007 4dr Sedan supercharged 260hp 3.8L V6
4-speed automatic FWD		 flat med none 3 37 10 50 63 19.7  
2007 4dr Sedan 200-horsepower 3.8L V6
4-speed automatic FWD		 hills light none 17 24 8 53 63 23.7  
2006 4dr Sedan supercharged 260hp 3.8L V6
4-speed automatic FWD		 flat med light 3 43 23 33 100 20.8  
2006 4dr Sedan 303-horsepower 5.3L V8
4-speed shiftable automatic FWD		 flat med light 5 22 28 45 69 18.4  
2006 4dr Sedan 200-horsepower 3.8L V6
4-speed automatic FWD		 flat med light 10 11 31 49 69 24.4  
Looking for a warranty? Get a quote.
2005 4dr Sedan supercharged 260hp 3.8L V6
4-speed automatic FWD		 hills med hvy 0 0 5 95 70 28.0  
2005 4dr Sedan 303-horsepower 5.3L V8
4-speed shiftable automatic FWD		 flat med none 7 23 45 25 65 17.9  
2005 4dr Sedan 200-horsepower 3.8L V6
4-speed automatic FWD		 flat light none 10 24 21 45 65 23.5  
2004 4dr Sedan supercharged 260hp 3.8L V6
4-speed shiftable automatic FWD		 hills med light 26 23 23 28 72 20.6  
2004 4dr Sedan supercharged 260hp 3.8L V6
4-speed automatic FWD		 hills med none 0 40 40 20 65 19.6  
2004 4dr Sedan 200-horsepower 3.8L V6
4-speed automatic FWD		 flat med light 3 7 20 70 77 27.5  
2003 4dr Sedan 200-horsepower 3.8L V6
4-speed automatic FWD		 flat med light 19 23 25 34 60 22.4  
2003 4dr Sedan 175-horsepower 3.1L V6
4-speed automatic FWD		 flat med none 9 10 80 1 100 26.1  
2002 4dr Sedan supercharged 240hp 3.8L V6
4-speed automatic FWD		 flat med light 66 8 3 23 64 22.4  
2002 4dr Sedan 200-horsepower 3.8L V6
4-speed automatic FWD		 flat med none 2 25 70 3 75 20.9  
2002 2dr Coupe 200-horsepower 3.8L V6
4-speed automatic FWD		 flat med light 0 17 28 56 65 21.4  
2001 4dr Sedan supercharged 240hp 3.8L V6
4-speed automatic FWD		 flat light light 9 5 5 83 80 24.3  
2001 4dr Sedan 200-horsepower 3.8L V6
4-speed automatic FWD		 flat v.lt none 0 0 1 99 60 31.0  
2001 4dr Sedan 175-horsepower 3.1L V6
4-speed automatic FWD		 flat v.lt light 0 2 3 95 80 28.1  
2000 4dr Sedan 200-horsepower 3.8L V6
4-speed automatic FWD		 flat light none 5 5 5 85 70 24.5  

Return to top

This page shows only averages. See all the Pontiac Grand Prix fuel economy data.

Pontiac G8 vs. Pontiac Grand Prix 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 G8 and Pontiac Grand Prix's where a car was driven. So you can get an idea of their real-world MPG based on how and where you drive a car.

See TrueDelta's information for all Sedans
See TrueDelta's information for all Pontiac models.

What Our Members Are Saying about the Real Gas Mileage of the Pontiac G8

Pontiac G8 Real Gas Mileage: Cons
YearBody/PowertrainComment
2009 4dr Sedan 415-horsepower 6.2L V8
6-speed shiftable automatic RWD		 Low teens in town, and 24mpg tops on the highway make this a less than ideal economy car. see full Pontiac G8 review
2009 4dr Sedan 256-horsepower 3.6L V6
5-speed shiftable automatic RWD		 The most MPGs I ever had was 25 and that was all highway driving at about 70. see full Pontiac G8 review
2009 4dr Sedan 361-horsepower 6.0L V8
6-speed shiftable automatic RWD		 Not bad mileage figures given the size of the car and the beast of an engine, but this is not a car for the hybrid set. see full Pontiac G8 review
2009 4dr Sedan 361-horsepower 6.0L V8
6-speed shiftable automatic RWD		 Is very low in stop-and-go traffic. Gets better with time, I understand. see full Pontiac G8 review
2009 4dr Sedan 415-horsepower 6.2L V8
6-speed manual RWD		 Average fuel economy 15 mpg in mixed driving. see full Pontiac G8 review
2008 4dr Sedan 256-horsepower 3.6L V6
5-speed shiftable automatic RWD		 low 18 mpg city see full Pontiac G8 review
 

What Our Members Are Saying about the Real Gas Mileage of the Pontiac Grand Prix

Pontiac Grand Prix Real Gas Mileage: Pros
YearBody/PowertrainComment
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
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
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
2002 4dr Sedan 200-horsepower 3.8L V6
4-speed automatic FWD		 HORRIBLE. 12-16mpg combined with both city and driving. see full Pontiac Grand Prix review
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! see full Pontiac Grand Prix review
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