Lexus GS 300
26 MPG The 2019 Lexus GS 300 is EPA-rated at 26 MPG combined (22 city / 32 highway). Over 15,000 miles a year that is about 577 gallons, $1846 a year in fuel, or $0.123 per mile at $3.20/gal.
Across its full 1994–2019 run it averages 20.7 MPG, improving by 8 MPG over 6 model years.
Running cost at different fuel prices and mileages
The figure everyone actually wants, and the one the EPA does not publish — because it depends on a fuel price no agency will commit to.
| Fuel price | Per mile | 10,000 mi/yr | 15,000 mi/yr | 20,000 mi/yr |
|---|---|---|---|---|
| $2.50/gal | $0.096 | $962 | $1442 | $1923 |
| $3.00/gal | $0.115 | $1154 | $1731 | $2308 |
| $3.20/gal | $0.123 | $1231 | $1846 | $2462 |
| $3.50/gal | $0.135 | $1346 | $2019 | $2692 |
| $4.00/gal | $0.154 | $1538 | $2308 | $3077 |
| $4.50/gal | $0.173 | $1731 | $2596 | $3462 |
| $5.00/gal | $0.192 | $1923 | $2885 | $3846 |
Every model year
| Year | Combined | City | Highway | EPA fuel cost/yr | CO₂ g/mi | Trims |
|---|---|---|---|---|---|---|
| 2019 | 26 MPG | 22 | 32 | $2950 | 347 | 1 |
| 2018 | 26 MPG | 22 | 32 | $2950 | 345 | 1 |
| 1997 | 18 MPG | 16 | 22 | $4300 | 494 | 1 |
| 1996 | 18 MPG | 16 | 22 | $4300 | 494 | 1 |
| 1995 | 18 MPG | 16 | 22 | $4300 | 494 | 1 |
| 1994 | 18 MPG | 16 | 21 | $4300 | 494 | 1 |
Where a model year offered several engines or drivetrains, the figure is the average across all EPA-tested trims that year — the trim count is shown so you can see how much averaging is involved.
How it compares in its class
Among the 261 midsize cars models tracked here, the Lexus GS 300 ranks 88 on current figures, against a class average of 27.2 MPG.
Closest more-efficient alternatives in the same class: Kia Spectra (26.5), Alfa Romeo Giulia (27), BMW 528i (27), BMW 530i xDrive (27), BMW X2 sDrive28i (27).
Tailpipe CO₂ is rated at 347 grams per mile, which works out to roughly 5.2 tonnes a year at 15,000 miles.
Questions
What MPG does the Lexus GS 300 get?
The 2019 Lexus GS 300 is rated at 26 MPG combined by the EPA — 22 city and 32 highway. Across all 6 model years in the database it averages 20.7 MPG, ranging from 18 to 26 depending on year and trim.
How much does a Lexus GS 300 cost in fuel per year?
At 26 MPG and 15,000 miles a year, it burns about 577 gallons — roughly $1846 a year with fuel at $3.20 a gallon, or $0.123 per mile. The EPA's own published annual figure for the 2019 model is $2950.
Has the Lexus GS 300 become more efficient over time?
Yes. It has gone from 18 MPG in 1994 to 26 in 2019 — an improvement of 8 MPG, or 44% across 6 model years.
Is the Lexus GS 300 efficient for its class?
It ranks 88 of 261 in the Midsize Cars class on current figures, against a class average of 27.2 MPG. That is 1.2 worse than typical for the class.
EPA test figures from fueleconomy.gov. Cost per mile and annual fuel spend are computed at a reference price of $3.20 per gallon — use your own price. Estimates based on official test figures and average fuel prices. Real-world consumption varies with driving style, load, terrain and maintenance.