MENU
1 0 3 4 3 4

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

Join Us

Pontiac G8 vs. Cadillac DTS MPG

Chart is based on 201 fuel economy reports for the Pontiac G8 and 13 fuel economy reports for the Cadillac DTS.

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.

Cadillac DTS MPG

Cadillac DTS Cadillac DTS 2008 17.4 MPG Highway Percentage 10 percent Cadillac DTS Cadillac DTS 2008 21.1 MPG Highway Percentage 40 percent Cadillac DTS Cadillac DTS 2007 17.2 MPG Highway Percentage 40 percent Cadillac DTS Cadillac DTS 2006 15.6 MPG Highway Percentage 25 percent Cadillac DTS Cadillac DTS 2006 22.9 MPG Highway Percentage 59 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 291-horsepower 4.6L V8
4-speed automatic FWD		 flat light hvy 0 40 50 10 60 17.4  
2008 4dr Sedan 275-horsepower 4.6L V8
4-speed automatic FWD		 flat med light 10 30 20 40 70 21.1  
2007 4dr Sedan 275-horsepower 4.6L V8
4-speed automatic FWD		 flat light light 5 25 30 40 65 17.2  
2006 4dr Sedan 291-horsepower 4.6L V8
4-speed automatic FWD		 flat light hvy 5 40 30 25 65 15.6  
2006 4dr Sedan 275-horsepower 4.6L V8
4-speed automatic FWD		 flat light light 8 11 23 59 78 22.9  

Return to top

This page shows only averages. See all the Cadillac DTS fuel economy data.

Pontiac G8 vs. Cadillac DTS 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 Cadillac DTS'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 and Cadillac 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 Cadillac DTS

Cadillac DTS Real Gas Mileage: Pros
YearBody/PowertrainComment
2009 4dr Sedan 275-horsepower 4.6L V8
4-speed automatic FWD		 I bought this car almost specifically for my "road" car, for trips, but do occasionally use it around town. I don't know how the other reviewers are driving their cars but I get what I think is great mileage, mid-teens around town and 28-29mgh on trips/hwy at 75MPH. I do try to drive easy to enhance my mileage. see full Cadillac DTS review
2006 4dr Sedan 275-horsepower 4.6L V8
4-speed automatic FWD		 Great Milage for the level of comfort, 25 plus on trips. see full Cadillac DTS review
2006 4dr Sedan 275-horsepower 4.6L V8
4-speed automatic FWD		 Great on the highway. At 65 I get a consistant 25mpg. The city is an entirely different story. In stop and go city driving, the best I've ever gotten is 10mpg. The average is 8mpg. The EPA estimates 17 in the city. They are off their rocker. This car sucks gas in city driving. Stay away unless you have tons of money or own an oil refinery. see full Cadillac DTS review
Cadillac DTS Real Gas Mileage: Cons
YearBody/PowertrainComment
2006 4dr Sedan 275-horsepower 4.6L V8
4-speed automatic FWD		 Terrible in the city. 8 mpg on average. At least it takes regular. see full Cadillac DTS review
2006 4dr Sedan 275-horsepower 4.6L V8
4-speed automatic FWD		 City gas mileage is pathetic. Since new I was lucky to get 10 mpg in the city, but in stop and go it's 8 mpg. When the car was newer, I took it to the dealer, and they checked everything out. I was told that it's a big V8. The Northstar engine is an embarrassment. see full Cadillac DTS review