Based on data from 49 vehicles, 2,607 fuel-ups and 629,263 miles of driving, the 2006 Hummer H3 gets a combined Avg MPG of 14.05 with a 0.09 MPG margin of error.

Any Engine Type 3.5L L5 GAS (42) L5 GAS (6) Any Body Style Sport Utility (18) Any Submodel Adventure (11) Luxury (15) Base (16) Other (7)

Below you can see a distribution of the fuel-ups with 76 outliers (2.83%) removed.

Following shows the average MPG of each of the 49 vehicles in the system.

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• My H3

  2006 Hummer H3 Luxury 3.5L L5 GAS Automatic 4 Speed
  Added Dec 2021 • 86 Fuel-ups

  Property of gmcgraw

• 14.1 Avg MPG

• My H3

  2006 Hummer H3 Luxury 3.5L L5 GAS Automatic 4 Speed
  Added Nov 2023 • 41 Fuel-ups

  Property of lordgrant

• 13.3 Avg MPG

• My H3

  2006 Hummer H3 3.5L L5 GAS Automatic 4 Speed
  Added Sep 2024 • 9 Fuel-ups

  Property of agivens123

• 12.7 Avg MPG

• Hummer H3

  2006 Hummer H3 Custom Submodel
  Added Feb 2018 • 426 Fuel-ups

  Property of tonymerc

• 13.7 Avg MPG

• Hummer H3

  2006 Hummer H3 Luxury 3.5L L5 GAS Automatic 4 Speed Sport Utility
  Added Nov 2020 • 154 Fuel-ups

  Property of drober05

• 16.1 Avg MPG

• Forrst

  2006 Hummer H3 Adventure 3.5L L5 GAS Automatic 4 Speed Sport Utility
  Added Mar 2020 • 83 Fuel-ups

  Property of Tutti

• 15.9 Avg MPG

• H3

  2006 Hummer H3 3.5L L5 GAS Automatic 4 Speed Sport Utility
  Added Oct 2022 • 63 Fuel-ups

  Property of shrinc

• 13.9 Avg MPG

• H3

  2006 Hummer H3 3.5L L5 GAS Automatic 4 Speed
  Added Feb 2018 • 37 Fuel-ups

  Property of jjonson

• 14.9 Avg MPG

• My H3

  2006 Hummer H3 Luxury 3.5L L5 GAS Automatic 4 Speed
  Added Jan 2023 • 5 Fuel-ups

  Property of jamesag047

• 11.9 Avg MPG

• Hummer H3

  2006 Hummer H3 Adventure 3.5L L5 GAS Automatic 4 Speed Sport Utility
  Added May 2018 • 55 Fuel-ups

  Property of gegann

• 13.7 Avg MPG

• My H3

  2006 Hummer H3 Adventure 3.5L L5 GAS Automatic 4 Speed
  Added Feb 2022 • 9 Fuel-ups

  Property of 56cbr600rr

• 13.2 Avg MPG

• H3

  2006 Hummer H3 3.5L L5 GAS Automatic 4 Speed
  Added Sep 2016 • 74 Fuel-ups

  Property of jejones

• 17.4 Avg MPG

• My H3

  2006 Hummer H3 Adventure 3.5L L5 GAS Automatic 4 Speed
  Added Oct 2021 • 25 Fuel-ups

  Property of Williamvvsantos

• 13.6 Avg MPG

• My H3

  2006 Hummer H3 3.5L L5 GAS Automatic 4 Speed
  Added Oct 2020 • 38 Fuel-ups

  Property of gleason1027

• 11.9 Avg MPG

• 06 Hummer H3

  2006 Hummer H3 Luxury 3.5L L5 GAS Automatic 4 Speed Sport Utility
  Added Aug 2018 • 4 Fuel-ups

  Property of kl369

• 10.4 Avg MPG

• My H3

  2006 Hummer H3 3.5L L5 GAS Automatic 4 Speed
  Added Dec 2019 • 7 Fuel-ups

  Property of aprilnichole87

• 15.3 Avg MPG

• Hummer

  2006 Hummer H3 Luxury 3.5L L5 GAS Automatic 4 Speed Sport Utility
  Added Jun 2019 • 10 Fuel-ups

  Property of wellllls

• 16.0 Avg MPG

• Hummer

  2006 Hummer H3 Adventure 3.5L L5 GAS Automatic 4 Speed
  Added Oct 2013 • 78 Fuel-ups

  Property of cupcakefury

• 17.6 Avg MPG

• Hummer

  2006 Hummer H3 Luxury 3.5L L5 GAS Automatic 4 Speed
  Added Mar 2017 • 197 Fuel-ups

  Property of Grammargyrl26

• 13.8 Avg MPG

• Hummer H3

  2006 Hummer H3 Luxury 3.5L L5 GAS Automatic 4 Speed Sport Utility
  Added Sep 2020 • 498 Fuel-ups

  Property of skoutr1

• 15.5 Avg MPG

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