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Hummer H3 MPG

MPG Number of Vehicles
16 miles per gallon 2 vehicles
17 miles per gallon 3 vehicles
18 miles per gallon 0 vehicles
19 miles per gallon 0 vehicles
20 miles per gallon 1 vehicles
Model Year Body/Powertrain MPG  
2008 2008 4dr SUV 242-hp 3.7L I5 5-sp manual AWD w/low range 19.5
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With the 239-horsepower 3.7L I5 engine, 5-speed manual transmission, and all-wheel drive w/low range, the 2008 Hummer H3 has been averaging 19.5 MPG (miles per gallon).

The 2008 Hummer H3s in this analysis were driven mostly on the highway at an average speed of 55 miles per hour (about 50 percent of the miles driven). The rest of the miles were in the city (50 percent), in the suburbs (0 percent), and in heavy traffic (0 percent).

In addition, the average 2008 Hummer H3 in this analysis was driven on hilly terrain with a light foot and the AC on only some of the time.
2008 2008 4dr SUV 242-hp 3.7L I5 4-sp automatic AWD w/low range 16.54
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2008 Hummer H3 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 Hummer H3's real-world MPG based on how and where you drive a car.