Lexus · Standard SUVs · Gasoline
Lexus GX: MPG and annual fuel cost, 2026
At 17 MPG combined, the Lexus GX sits 5.5 MPG below the standard SUVs median of 22.5, which makes it tied for 77th of 90 standard SUVs, in the bottom quarter.
- 17MPG combinedtied 77th of 90 in class
- $4,850a year in fueltied 81st of 90 in class
- 505g/mile CO2
Where it stands
Compared only with the gasoline models of its class it is tied for 25th of 36 gasoline standard SUVs, in the bottom quarter. The median of that narrower group is 19.5 MPG, against 22.5 MPG for all standard SUVs together.
Among all gasoline models of the year, regardless of size, it is tied for 159th of 180 gasoline models, in the bottom quarter.
Within the 16 Lexus models rated for 2026 it is 16th on combined rating; the median of the make's line-up is 24.5 MPG.
In its class, just ahead of it is the Infiniti QX80 at 18 MPG and just behind it is the Aston Martin DBX 727 at 16 MPG.
Fuel cost and CO2
Assuming 15,000 miles a year with 55% of them in the city and premium gasoline at $5.48 per gallon, fuelling the most efficient version comes to about $4,850 a year. That is $1,475 more than the standard SUVs median of $3,375, which makes it tied for 81st of 90 standard SUVs, in the bottom quarter.
It emits 505 g of CO2 per mile from the tailpipe; the standard SUVs median is 387, a difference of 118 g/mile.
Rated versions
Its city rating is 15 and its highway rating 21: the highway figure is 6 higher. The data lists one version for 2026: GX 550: 3.4 L, 6 cyl, Automatic (S10), 4WD.
| Version | Combined MPG | City MPG | Highway MPG | Annual fuel cost | CO2 g/mile |
|---|---|---|---|---|---|
| GX 550: 3.4 L, 6 cyl, Automatic (S10), 4WD | 17 | 15 | 21 | $4,850 | 505 |
Year by year
The Lexus GX is in the data for 8 of the 8 model years from 2019 to 2026. Between 2019 and 2026 the best combined rating rose by 1 MPG, from 16 to 17. Fuel cost for the best version is $4,850 in the latest data against $5,150 in 2019, although the file applies today's fuel prices to every model year, so that change comes from the rating, not from prices.
| Model year | Versions | Best MPG | Lowest MPG | Fuel cost | CO2 g/mi | Class median |
|---|---|---|---|---|---|---|
| 2026 | 1 | 17 | 17 | $4,850 | 505 | 22.5 |
| 2025 | 1 | 17 | 17 | $4,850 | 505 | 22.5 |
| 2024 | 1 | 17 | 17 | $4,850 | 504 | 22 |
| 2023 | 1 | 16 | 16 | $5,150 | 542 | 21 |
| 2022 | 1 | 16 | 16 | $5,150 | 542 | 21 |
| 2021 | 1 | 16 | 16 | $5,150 | 542 | 20.5 |
| 2020 | 1 | 16 | 16 | $5,150 | 542 | 21 |
| 2019 | 1 | 16 | 16 | $5,150 | 548 | 21 |
Similar models
| Model | Powertrain | Combined MPG | Annual fuel cost | Model year |
|---|---|---|---|---|
| Cadillac Escalade | Gasoline | 17 | $4,850 | 2026 |
| GMC Yukon | Gasoline | 17 | $3,950 | 2026 |
| Aston Martin DBX 727 | Gasoline | 16 | $5,150 | 2026 |
| Bentley Bentayga | Gasoline | 16 | $5,150 | 2026 |
| Nissan Armada | Gasoline | 18 | $4,550 | 2026 |
Rated almost identically and covered by this page:
- Aston Martin DBX 707 17 MPG, $4,850 a year, 1 version, last rated 2026
- Lincoln Navigator 17 MPG, $3,950 a year, 1 version, last rated 2026
Compare and rank
Rankings: Standard SUVs, Gasoline, Lexus, Gasoline standard SUVs.
Data: US EPA and DOE, as prepared in methods and data.