MENU
1 0 3 4 3 4

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

Join Us

Hummer H3 vs. Hummer H2 MPG

Chart is based on 54 fuel economy reports for the Hummer H3 and 12 fuel economy reports for the Hummer H2.

Hummer H3 MPG

Hummer H3 Hummer H3 2009 20.0 MPG Highway Percentage 0 percent Hummer H3 Hummer H3 2008 19.5 MPG Highway Percentage 50 percent Hummer H3 Hummer H3 2008 16.5 MPG Highway Percentage 30 percent Hummer H3 Hummer H3 2007 18.0 MPG Highway Percentage 43 percent Hummer H3 Hummer H3 2007 15.8 MPG Highway Percentage 21 percent Hummer H3 Hummer H3 2006 16.6 MPG Highway Percentage 49 percent Hummer H3 Hummer H3 2006 16.4 MPG Highway Percentage 55 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 SUV 295-horsepower 5.3L V8
4-speed automatic AWD w/low range		 flat light hvy 0 100 0 0 20.0  
2008 4dr SUV 242-horsepower 3.7L I5
5-speed manual AWD w/low range		 hills light light 0 50 0 50 55 19.5  
2008 4dr SUV 242-horsepower 3.7L I5
4-speed automatic AWD w/low range		 flat light none 2 56 12 30 65 16.5  
2007 4dr SUV 242-horsepower 3.7L I5
5-speed manual AWD w/low range		 hills med light 17 17 24 43 65 18.0  
2007 4dr SUV 242-horsepower 3.7L I5
4-speed automatic AWD w/low range		 flat light light 16 27 36 21 60 15.8  
2006 4dr SUV 220-horsepower 3.5L I5
5-speed manual AWD w/low range		 flat med none 2 31 18 49 68 16.6  
2006 4dr SUV 220-horsepower 3.5L I5
4-speed automatic AWD w/low range		 flat med light 10 19 16 55 68 16.4  

Return to top

This page shows only averages. See all the Hummer H3 fuel economy data.

Hummer H2 MPG

Hummer H2 Hummer H2 2008 13.2 MPG Highway Percentage 17 percent Hummer H2 Hummer H2 2005 14.3 MPG Highway Percentage 85 percent Hummer H2 Hummer H2 2005 15.0 MPG Highway Percentage 70 percent Hummer H2 Hummer H2 2003 12.8 MPG Highway Percentage 50 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 SUV 393-horsepower 6.2L V8
6-speed shiftable automatic AWD w/low range		 flat light none 1 49 33 17 81 13.2  
2005 4dr SUV 325-horsepower 6.0L V8
4-speed automatic AWD w/low range		 hills med light 0 0 15 85 75 14.3  
2005 4dr SUT 325-horsepower 6.0L V8
4-speed automatic AWD w/low range		 hills light light 0 0 30 70 70 15.0  
2003 4dr SUV 316-horsepower 6.0L V8
4-speed automatic AWD w/low range		 flat light light 3 27 20 50 83 12.8  

Return to top

This page shows only averages. See all the Hummer H2 fuel economy data.

Hummer H3 vs. Hummer H2 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 Hummer H3 and Hummer H2'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 SUVs and SUTs.
See TrueDelta's information for all Hummer models.

What Our Members Are Saying about the Real Gas Mileage of the Hummer H3

Hummer H3 Real Gas Mileage: Cons
YearBody/PowertrainComment
2006 4dr SUV 220-horsepower 3.5L I5
4-speed automatic AWD w/low range		 It could be better... Why no medium-duty diesel? see full Hummer H3 review
2006 4dr SUV 220-horsepower 3.5L I5
4-speed automatic AWD w/low range		 I knew what I was getting into when I bought it. But come on, 14.8mg on the freeway? I would have bought an H2 if I knew that was going to happen. You have to drive like a grandpa to achieve 17mpg. i.e. - under 65 on the freeway. see full Hummer H3 review
 

What Our Members Are Saying about the Real Gas Mileage of the Hummer H2

Hummer H2 Real Gas Mileage: Cons
YearBody/PowertrainComment
2005 4dr SUV 325-horsepower 6.0L V8
4-speed automatic AWD w/low range		 This is a true gas guzzler, the vehicle feels heavy and you have to stomp the pedal to accelerate. see full Hummer H2 review