2026 · Midsize & Large SUV · Gas
2026 Lexus GX MPG & fuel economy
The 2026 Lexus GX is a midsize or large SUV with one EPA-rated configuration. The most efficient version returns 17 MPG combined (15 city / 21 highway) on premium gasoline. Efficiency is unchanged from the 2025 model. Among 91 midsize & large SUVs rated for 2026, it ranks 84th for lowest fuel cost. At 15,000 miles a year with $3.95/gal premium gas, it costs about $3,485 a year to fuel.
What will it cost you?
Your mileage and prices are saved and used across the site.
Fuel average
The 2026 Lexus GX's fuel average is 7.2 km/L (13.8 L/100 km), or 17 MPG combined: 6.4 km/L in the city and 8.9 km/L on the highway.
| MPG | km/L | L/100 km | |
|---|---|---|---|
| City | 15 | 6.4 | 15.7 |
| Highway | 21 | 8.9 | 11.2 |
| Combined | 17 | 7.2 | 13.8 |
How it ranks among 2026 Midsize & Large SUVs
Full class ranking →Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.
GX MPG across model years
Full history →1 EPA-rated configuration
| Configuration | Type | City | Hwy | Combined | Range | Your cost / yr |
|---|---|---|---|---|---|---|
| 4WD · 3.4L 6-cyl turbo · 10-speed automatic GX 550 |
Gas | 15 MPG | 21 MPG | 17 MPG | — | $3,485 |
Specs (most efficient configuration)
- Fuel
- Premium gasoline
- Engine / motor
- 3.4L 6-cyl turbo
- Transmission
- 10-speed automatic
- Drivetrain
- 4WD
- Tailpipe CO₂
- 505 g/mi
- EPA fuel economy score
- 3/10
- EPA greenhouse gas score
- 3/10
2026 Lexus GX vs. rivals
Compare the 2026 GX
With any other car from any year, including other GX model years. Type a year to jump, e.g. "2015 Accord".
Frequently asked questions
What is the gas mileage of the 2026 Lexus GX?
Up to 17 MPG combined (15 city / 21 highway).
What fuel does the 2026 Lexus GX use?
Premium gasoline (premium is required or recommended by the manufacturer).
What is the fuel average in km/L for the 2026 Lexus GX?
The 2026 Lexus GX's fuel average is 7.2 km/L (13.8 L/100 km), or 17 MPG combined: 6.4 km/L in the city and 8.9 km/L on the highway.
How much does it cost to fuel the 2026 Lexus GX per year?
About $3,485 at 15,000 miles a year with $3.95/gal premium gas, or $23.24 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.