- Gas
- Standard SUVs
- MY2006–2010
Hummer H3 MPG & Fuel Cost by Year
5 model years · 2006–2010
15,000 mi/yr · regular gasoline $4.36/gal (U.S. average, Sep 2026)
Hummer H3 fuel economy at a glance
EPA has rated the Hummer H3 for 5 model years, 2006 to 2010. Across those years its combined rating runs 14–16 MPG. The latest model year, 2010, has 3 configurations rated 14–16 MPG combined and costing $4,080–$4,670 a year to fuel at regular gasoline $4.36/gal (U.S. average, Sep 2026). The most efficient configuration on record since 2006 is the 2010 H3 3.7L 5-cyl 4WD, at 16 MPG.
Hummer H3 MPG by year
Costs use the current EIA price set and 15,000 miles a year for every year, so years are comparable. Green marks the best year for each powertrain.
Hummer H3 generations
1 generations between 2006 and 2010. Open one for the table of every model year and configuration.
2010 powertrain options
More Hummer models
Frequently asked questions
What is the Hummer H3's gas mileage by year?
EPA combined ratings for the Hummer H3 run 14–16 MPG across model years 2006 to 2010. The latest year, 2010, is rated 14–16 MPG.
Which Hummer H3 model year has the best gas mileage?
The 2010 Hummer H3 H3 3.7L 5-cyl 4WD has the highest combined rating since 2006, at 16 MPG.
How much does a Hummer H3 cost to fuel per year?
For MY2010, EPA-rated configurations cost $4,080–$4,670 a year to fuel, driving 15,000 miles at regular gasoline $4.36/gal (U.S. average, Sep 2026). The most efficient one costs $4,080.
Has the Hummer H3's fuel economy improved over time?
Not much. The most efficient configuration is rated 16 MPG in both 2006 and 2010.