| 1 | 0 | 3 | 4 | 3 | 4 |
Hummer H3 MPG
| MPG | Number of Vehicles |
| 15 miles per gallon | 5 vehicles |
| 16 miles per gallon | 1 vehicles |
| 17 miles per gallon | 0 vehicles |
| 18 miles per gallon | 2 vehicles |
| 19 miles per gallon | 0 vehicles |
| 20 miles per gallon | 1 vehicles |
| Model Year | Body/Powertrain | MPG | |
| 2007 | 2007 4dr SUV 242-hp 3.7L I5 5-sp manual AWD w/low range | 18 | See all data |
| With the 239-horsepower 3.7L I5 engine, 5-speed manual transmission, and all-wheel drive w/low range, the 2007 Hummer H3 has been averaging 18 MPG (miles per gallon). The 2007 Hummer H3s in this analysis were driven mostly on the highway at an average speed of 65 miles per hour (about 43 percent of the miles driven). The rest of the miles were in the city (16.5 percent), in heavy traffic (16.5 percent), and in the suburbs (0 percent). In addition, the average 2007 Hummer H3 in this analysis was driven on hilly terrain with a medium foot and the AC on only some of the time. |
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| 2007 | 2007 4dr SUV 242-hp 3.7L I5 4-sp automatic AWD w/low range | 15.83 | See all data |
What Our Members Are Saying about the Real Gas Mileage of the 2007 Hummer H3
4-speed automatic AWD w/low range
4-speed automatic AWD w/low range
2007 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.