Lexus GX MPG by Year

By , Gas Mileage Calculators

Here's the official EPA Lexus GX MPG for every engine and drivetrain from 2003 to 2026, plus a fuel cost calculator.

Best 2026 GX
17 MPG
2026 GX 550 (4WD)
Most efficient GX ever
17 MPG
2010-2016 GX 460

GX MPG by Year and Version

1 configuration

The EPA has rated 24 configurations of the GX. Pick a year to compare engines and drivetrains.

EPA ratings for the 2026 Lexus GX
VersionEngineTransmissionDriveCityHwyCombinedEPA
GX 550Premium Gasoline3.4L 6-cylAuto (S10)4WD152117View

GX MPG Over the Years

Each bar shows the range of combined MPG across every GX configuration the EPA rated that year, from the thirstiest version to the most efficient. Hover or tap a year to see the numbers.

Lexus GX combined MPG range by model year
Gas engines only

How the GX Compares

The EPA rated 55 full-size SUVs for 2026. The best GX version, at 17 MPG combined, ties for 46th with 3 other models of 55. Combined ratings in the class run from 14 to 37 MPG, with a median of 21. Plug-in hybrids and electric models are ranked separately.

Best combined rating for each full-size SUV the EPA rated for 2026, top 5, plus the GX
RankModelCombined
1Jeep Cherokee37 MPG
2Toyota Grand Highlander36 MPG
3Toyota Highlander35 MPG
4Hyundai Palisade34 MPG
5Lexus TX27 MPG
46Lexus GX17 MPG

What Does a GX Cost to Fuel?

Pick a GX, then enter your gas price and how much you drive. The math uses the EPA city and highway ratings, weighted by how much of your driving happens in each.

Yearly cost
Enter a price
Per month-
Gallons per year-
Cost per mile-
Your blended MPG-
Real-world results vary with driving style, weather, tire condition and maintenance.

GX MPG Questions

Which GX year gets the best gas mileage?

The 2010 to 2016 GX 460 holds the top EPA rating at 17 MPG combined (15 city, 20 highway). Among 2026 models, the GX 550 is rated at 17 MPG combined.

Why doesn't my GX match the EPA numbers?

EPA ratings come from standardized lab tests. Your results depend on speed, climate, idling, passengers and cargo, roof racks, tire pressure and upkeep. The ratings are best for comparing one vehicle against another. To track your own numbers, try the MPG calculator.

Keep Going

Compare two vehiclesSee the yearly fuel cost gap between a GX and another vehicle. Price a road tripWork out the fuel cost for a trip in your GX on our sister site, FuelPriceCalculator.com. All Lexus modelsRatings for the RX, IS, LS, ES and every other Lexus. Lexus LX MPGAnother Lexus, rated 19 to 20 MPG combined for 2026. Lexus TX MPGAnother Lexus, rated 23 to 27 MPG combined for 2026. Ford Expedition MPGA full-size SUV from Ford, rated 18 to 19 MPG combined for 2026. Lincoln Navigator MPGA full-size SUV from Lincoln, rated 17 MPG combined for 2026. Dodge Durango MPGA full-size SUV from Dodge, rated 13 to 20 MPG combined for 2026. Lexus LC MPGAnother Lexus, rated 18 MPG combined for 2026.

Where These Numbers Come From

Cedrick Reese built this page from the EPA fuel economy file published on fueleconomy.gov. It has 24 ratings for the GX from 2003 to 2026, and every one of them is shown in the table. Each row in the table links to the matching EPA vehicle record, so you can check any figure against the source. Ratings from before 2008 use the EPA's revised estimates, which put older vehicles on the same scale as newer ones. When the EPA posts an updated file with new model years or corrected ratings, this page is rebuilt from it. The cost calculator uses the gas price you enter rather than a national average, so the result fits where you live.

Ratings on this page come from the EPA file downloaded on October 1, 2026.

Sources