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2006 Hummer H3
Shown: 2006 Hummer H3. Photo: Elise240SX, CC BY-SA 4.0, via Wikimedia Commons
  • Gas
  • Standard pickups
  • MY2009–2010

Hummer H3T MPG & Fuel Cost by Year

2 model years · 2009–2010

16 MPG
Combined
14 MPG
City
18 MPG
Highway
Annual cost · MY2010 H3T 3.7L 5-cyl 4WD
$4,080

15,000 mi/yr · regular gasoline $4.36/gal (U.S. average, Sep 2026)

All Hummer models

Hummer H3T fuel economy at a glance

EPA has rated the Hummer H3T for 2 model years, 2009 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 2009 is the 2010 H3T 3.7L 5-cyl 4WD, at 16 MPG.

Hummer H3T MPG by year

1416 20092010 Gas 1416 20092010 Gas
Combined MPG: the line is the most efficient configuration, the shaded band reaches down to the least efficient. Dotted lines mark new generations.
Hummer H3T: combined fuel economy and annual fuel cost for each model year, grouped by generation
Year Gas (MPG) $/yr
2010 Generation page
2010 14–16 $4,080–$4,670
2009 Generation page
2009 14–16 $4,080–$4,670

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 H3T generations

2 generations between 2009 and 2010. Open one for the table of every model year and configuration.

2010 powertrain options

Gas · 3.7L, 5.3L
Combined
14–16 MPG
Per year
$4,080–$4,670
See gas configurations
EPA ratings: fueleconomy.gov file of Sep 29, 2026 · regular gasoline $4.36/gal (U.S. average, Sep 2026) · 15,000 mi/yr, 55% city / 45% highway · How we calculate

Frequently asked questions

What is the Hummer H3T's gas mileage by year?

EPA combined ratings for the Hummer H3T run 14–16 MPG across model years 2009 to 2010. The latest year, 2010, is rated 14–16 MPG.

Which Hummer H3T model year has the best gas mileage?

The 2010 Hummer H3T H3T 3.7L 5-cyl 4WD has the highest combined rating since 2009, at 16 MPG.

How much does a Hummer H3T 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 H3T's fuel economy improved over time?

Not much. The most efficient configuration is rated 16 MPG in both 2009 and 2010.

How many generations of the Hummer H3T are there?

EPA data covers 2 generations of the Hummer H3T: 2010, 2009. Each has its own page with a table for every model year.