Based on data from 36 vehicles, 2,336 fuel-ups and 637,043 miles of driving, the 2007 Hummer H3 gets a combined Avg MPG of 14.56 with a 0.09 MPG margin of error.

Any Engine Type 3.7L L5 GAS (27) GAS (1) L5 GAS (8) Any Body Style Sport Utility (8) Any Submodel Adventure (6) Base (7) X (7) Luxury (7) Other (9)

Below you can see a distribution of the fuel-ups with 243 outliers (9.42%) removed.

Following shows the average MPG of each of the 36 vehicles in the system.

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• My H3

  2007 Hummer H3 Adventure 3.7L L5 GAS Automatic 4 Speed
  Added Sep 2016 • 31 Fuel-ups

  Property of JcRicker

• 16.3 Avg MPG

• Hummer

  2007 Hummer H3 X 3.7L L5 GAS Automatic 4 Speed
  Added Apr 2013 • 78 Fuel-ups

  Property of RonR66

• 15.2 Avg MPG

• My H3

  2007 Hummer H3 3.7L L5 GAS Automatic 4 Speed
  Added Jun 2016 • 14 Fuel-ups

  Property of Alexsis

• 15.4 Avg MPG

• Hummer

  2007 Hummer H3 3.7L L5 GAS Automatic 4 Speed Sport Utility
  Added Feb 2014 • 73 Fuel-ups

  Property of schtirlitz

• 14.0 Avg MPG

• Hummer 3

  2007 Hummer H3 X 3.7L L5 GAS Automatic 4 Speed Sport Utility
  Added Oct 2017 • 562 Fuel-ups

  Property of tonync

• 17.8 Avg MPG

• Hummer H3

  2007 Hummer H3 Adventure 3.7L GAS L5 Automatic 4
  Added Jun 2015 • 3 Fuel-ups

  Property of Ecrabb

• 17.4 Avg MPG

• Wagon

  2007 Hummer H3 GAS L5
  Added Mar 2013 • 49 Fuel-ups

  Property of renurbk

• 17.5 Avg MPG

• hummer

  2007 Hummer H3 GAS L5
  Added Dec 2012 • 81 Fuel-ups

  Property of driver100

• 17.0 Avg MPG

• Daisy

  2007 Hummer H3 GAS L5
  Added Oct 2012 • 70 Fuel-ups

  Property of mdsveda

• 16.2 Avg MPG

• Beast

  2007 Hummer H3 GAS L5
  Added Mar 2013 • 4 Fuel-ups

  Property of Casye68

• 17.0 Avg MPG

• Hummer H3

  2007 Hummer H3 GAS L5
  Added Jan 2013 • 6 Fuel-ups

  Property of jasonfine

• 15.2 Avg MPG

• Minister Mobile

  2007 Hummer H3 GAS L5
  Added May 2012 • 21 Fuel-ups

  Property of StangofAZ

• 15.2 Avg MPG

• Tank

  2007 Hummer H3 GAS L5
  Added Jun 2012 • 19 Fuel-ups

  Property of libertykk

• 18.1 Avg MPG

• H3

  2007 Hummer H3 GAS
  Added Nov 2010 • 46 Fuel-ups

  Property of acree

• 15.5 Avg MPG

• Hummer

  2007 Hummer H3 Luxury 3.7L L5 GAS Automatic 4 Speed
  Added Aug 2016 • 53 Fuel-ups

  Property of RBeacher

• 15.1 Avg MPG

• Heethers Hum

  2007 Hummer H3 GAS L5
  Added Aug 2008 • 6 Fuel-ups

  Property of thassell

• 13.8 Avg MPG

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