Lexus GX MPG & Fuel Economy
The 2026 Lexus GX gets up to 17 MPG combined (15 city / 21 highway) in EPA testing.
Latest model year (2026):
The Lexus GX gets up to 17 MPG combined (15 city / 21 highway) in the Auto (S10), 6 cyl, 3.4 L trim.
Lexus GX MPG — All Years
| Year | Trim | Engine | Fuel | City (MPG) | Hwy (MPG) | Combined (MPG) |
|---|---|---|---|---|---|---|
| 2026 | Auto (S10), 6 cyl, 3.4 L | 6 3.4L | Premium Gasoline | 15 | 21 | 17 |
| 2025 | Auto (S10), 6 cyl, 3.4 L | 6 3.4L | Premium Gasoline | 15 | 21 | 17 |
| 2024 | Auto (S10), 6 cyl, 3.4 L | 6 3.4L | Premium Gasoline | 15 | 21 | 17 |
| 2023 | Auto (S6), 8 cyl, 4.6 L | 8 4.6L | Premium Gasoline | 15 | 19 | 16 |
| 2022 | Auto (S6), 8 cyl, 4.6 L | 8 4.6L | Premium Gasoline | 15 | 19 | 16 |
| 2021 | Auto (S6), 8 cyl, 4.6 L | 8 4.6L | Premium Gasoline | 15 | 19 | 16 |
| 2020 | Auto (S6), 8 cyl, 4.6 L | 8 4.6L | Premium Gasoline | 15 | 19 | 16 |
| 2019 | Auto (S6), 8 cyl, 4.6 L | 8 4.6L | Premium Gasoline | 15 | 18 | 16 |
| 2018 | Auto (S6), 8 cyl, 4.6 L | 8 4.6L | Premium Gasoline | 15 | 18 | 16 |
| 2017 | Auto (S6), 8 cyl, 4.6 L | 8 4.6L | Premium Gasoline | 15 | 18 | 16 |
| 2016 | Auto (S6), 8 cyl, 4.6 L | 8 4.6L | Premium Gasoline | 15 | 20 | 17 |
| 2015 | Auto (S6), 8 cyl, 4.6 L | 8 4.6L | Premium Gasoline | 15 | 20 | 17 |
Data sourced from fueleconomy.gov (U.S. Department of Energy). MPG figures are EPA-tested. Fuel costs are estimates based on average fuel prices and 15,000 miles/year.
Lexus GX MPG FAQ
What is the MPG of the Lexus GX?
The Lexus GX gets up to 17 MPG combined (15 city / 21 highway) in the 2026 model year. Fuel economy varies by engine and trim — see the full table above for details.
Which Lexus GX trim has the best fuel economy?
The Auto (S10), 6 cyl, 3.4 L trim offers the best combined fuel economy at 17 MPG. Smaller engines and front-wheel-drive configurations typically achieve the highest MPG.