Photo: Lexus GX by Ethan Llamas, CC BY-SA 4.0, via Wikimedia Commons. It shows the model, not always this exact version.
Lexus · model year 2026
2026 Lexus GX 550
SUV · 4-Wheel Drive · Gas · EPA class: Standard Sport Utility Vehicle 4WD
Where it places
- 419 Fuel-efficient SUVs
Ordered by combined MPG #419 of 479 - 350 Fuel-efficient large SUVs
Ordered by combined MPG #350 of 488 - 07 Lexus cars
Every model year, newest first #7 of 767 - 640 2026 cars and trucks
Every car of that year, A to Z #640 of 1,172 - 1108 Fuel-efficient AWD and 4WD cars
Ordered by combined MPG #1108 of 1,362 - 1960 Gas and hybrid cars by fuel cost
Ordered by fuel a year #1960 of 2,158
Against fuel-efficient SUVs
The CarCody take
The 2026 Lexus GX 550 is a gasoline SUV with 4-wheel drive and a 3.4-liter turbocharged six-cylinder. Its EPA rating is 17 MPG combined, with 15 MPG city and 21 MPG highway. The EPA annual fuel-cost estimate is $4,850, and tailpipe CO2 is 505 grams per mile.
Good to know
- 4-wheel drive SUV body
- 17 MPG combined EPA rating
- 21 MPG highway EPA rating
- 10-speed automatic transmission
Watch for
- 15 MPG city EPA rating
- $4,850 EPA annual fuel-cost estimate
- 505 grams of CO2 per mile
- Gasoline-only powertrain
Who it suits. Drivers who need a 4-wheel-drive SUV Highway users who can use the 21 MPG rating Buyers budgeting for higher fuel use
The 2026 GX 550 makes sense for an SUV buyer who specifically wants 4-wheel drive and accepts gasoline running costs. Its 17 MPG combined rating gives a clear planning baseline, while the 15 MPG city result matters if most trips are short or urban. Highway-heavy drivers may see the 21 MPG rating as the more relevant guide. The $4,850 EPA annual estimate and 505 grams of CO2 per mile should be part of the ownership decision, not an afterthought.
What it is
The 2026 Lexus GX 550 is a standard sport utility vehicle with 4-wheel drive. It uses gasoline, an automatic 10-speed transmission, and a 3.4-liter turbocharged six-cylinder engine.
It belongs to the Lexus cars lineup and uses the GX base model name.
The numbers
The defining figure is 17 MPG combined. EPA ratings are 15 MPG in city driving and 21 MPG on the highway.
That spread shows where the fuel goes: slower city travel rates lower, while steady highway travel rates higher.
What it costs to run
The EPA annual fuel-cost estimate is $4,850. Your actual bill will depend on how much you drive and how closely your trips match the city and highway test patterns.
Tailpipe emissions are 505 grams of CO2 per mile.
How it compares
With 17 MPG combined, the GX 550 is a gasoline SUV for buyers who accept substantial fuel use for a 4-wheel-drive body. Its 15 city and 21 highway ratings give you the useful comparison points for your own routes.
For other SUV figures, see fuel-efficient SUVs.
Who it suits
This SUV suits someone who wants 4-wheel drive and is comfortable budgeting for a $4,850 EPA annual fuel estimate.
It also fits drivers whose use mixes city and highway travel and who want one combined MPG number for planning.
Trade-offs
The GX 550 pairs a turbocharged 3.4-liter six-cylinder with 4-wheel drive and a 10-speed automatic. Those drivetrain choices come with 17 MPG combined, 15 city, and 21 highway.
Gasoline operation means fuel stops remain part of ownership, and the 505-gram-per-mile tailpipe CO2 figure is another cost of that setup.
Verdict
Choose the 2026 Lexus GX 550 when four driven wheels and an SUV body matter more than minimizing fuel use. Its EPA numbers are straightforward: 17 MPG overall, with a noticeable city penalty and a better highway result. Plan around the $4,850 yearly fuel estimate, then decide whether that ongoing expense fits your driving.
Every figure on record
- Combined MPG
- 17 MPG
- City MPG
- 15 MPG
- Highway MPG
- 21 MPG
- Annual fuel cost
- $4,850
- Tailpipe CO₂
- 505 g per mile
- Model year
- 2026
- Body
- SUV
- EPA size class
- Standard Sport Utility Vehicle 4WD
- Drive
- 4-Wheel Drive
- Engine
- 3.4 L 6-cyl turbo
- Transmission
- Automatic (S10)
- Fuel
- Gasoline
Questions
What is the 2026 Lexus GX 550's combined MPG?
The EPA combined rating is 17 MPG.
What city and highway MPG does it get?
It is rated at 15 MPG in the city and 21 MPG on the highway.
How much does fuel cost per year?
The EPA annual fuel-cost estimate is $4,850.
What drivetrain does the GX 550 use?
It uses 4-wheel drive.
What engine and transmission are listed?
The GX 550 has a 3.4-liter turbocharged six-cylinder engine and an automatic 10-speed transmission.
How much tailpipe CO2 does it emit?
Its tailpipe CO2 figure is 505 grams per mile.
What kind of vehicle is it?
It is a 2026 Lexus SUV classified as a standard sport utility vehicle with 4WD.
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