Lexus GX 550 MPG by year — every rating on record
The Lexus GX 550 has a combined EPA fuel economy rating for 3 model years, from 2024 to 2026. Across those years its best rated version returned 17 mpg (2024) and its thirstiest returned 17 mpg (2024). The EPA record holds 3 configurations for this nameplate, most recently a Standard Sport Utility Vehicle 4WD.
Year-by-year EPA ratings
| Model year | Configurations | Best combined | Worst combined | Class rank that year | Drivetrains | Fuel | EPA class |
|---|---|---|---|---|---|---|---|
| 2024 | 1 | 17 mpg | 17 mpg | #136 of 166 (18th pct) | 4-Wheel Drive | Premium | Standard Sport Utility Vehicle 4WD |
| 2025 | 1 | 17 mpg | 17 mpg | #164 of 192 (15th pct) | 4-Wheel Drive | Premium | Standard Sport Utility Vehicle 4WD |
| 2026 | 1 | 17 mpg | 17 mpg | #166 of 191 (13th pct) | 4-Wheel Drive | Premium | Standard Sport Utility Vehicle 4WD |
Where it has stood in its class
Ranked against every other nameplate the EPA filed under the same class that year. The Lexus GX 550 placed highest in 2024 at #136 of 166, and lowest in 2026 at #166 of 191. It spent 0 of its 3 ranked years in the top half of its class.
Every configuration on record
All 3 configurations EPA lists for this nameplate, newest first.
| Year | Configuration | Engine detail | City | Highway | Combined | Gallons/yr | Barrels/yr | EPA fuel cost/yr | CO2 g/mi | GHG |
|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 3.4L 6-cyl 4-Wheel Drive Automatic (S10) Premium | SIDI & PFI, turbocharged | 15 | 21 | 17 | 676.5 | 17.5 | $4,550 | 505 | 3/10 |
| 2025 | 3.4L 6-cyl 4-Wheel Drive Automatic (S10) Premium | SIDI & PFI, turbocharged | 15 | 21 | 17 | 676.5 | 17.5 | $4,550 | 505 | 3/10 |
| 2024 | 3.4L 6-cyl 4-Wheel Drive Automatic (S10) Premium | SIDI & PFI, turbocharged | 15 | 21 | 17 | 676.5 | 17.5 | $4,550 | 504 | 3/10 |
What GX 550 fuel costs over a year
At the EPA's 11,500 miles a year, the 2026 Lexus GX 550 burns 676 to 676 gallons depending on configuration. Below is what that costs at three pump prices, and how much more the thirstiest configuration costs than the most efficient one.
| Pump price | Most efficient | Thirstiest | Spread |
|---|---|---|---|
| $3.00/gal | $2,029 | $2,029 | $0 |
| $3.50/gal | $2,368 | $2,368 | $0 |
| $4.00/gal | $2,706 | $2,706 | $0 |
EPA’s own estimate for the 2026 model year is $4,550 to $4,550 a year in fuel, or $11,500 more than the average new vehicle over five years.
How it compares with other Standard Sport Utility Vehicle 4WD
Across the 317 nameplates EPA classifies as Standard Sport Utility Vehicle 4WD, the median best combined rating is 22 mpg. At 17 mpg the Lexus GX 550 is 5 mpg below the median, which is worth about $538 a year at $3.50 a gallon.
- All Standard Sport Utility Vehicle 4WD rankings — every nameplate in the class, best to worst.
Other Lexus nameplates
Every Lexus model compared → — all nameplates ranked by best combined rating, with what each one costs a year.