Lexus LS 500h
25 MPG The 2023 Lexus LS 500h is EPA-rated at 25 MPG combined (22 city / 29 highway). Over 15,000 miles a year that is about 600 gallons, $1920 a year in fuel, or $0.128 per mile at $3.20/gal.
Across its full 2018–2023 run it averages 27.4 MPG, falling by 3 MPG over 5 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 | $0.100 | $1000 | $1500 | $2000 |
| $3.00/gal | $0.120 | $1200 | $1800 | $2400 |
| $3.20/gal | $0.128 | $1280 | $1920 | $2560 |
| $3.50/gal | $0.140 | $1400 | $2100 | $2800 |
| $4.00/gal | $0.160 | $1600 | $2400 | $3200 |
| $4.50/gal | $0.180 | $1800 | $2700 | $3600 |
| $5.00/gal | $0.200 | $2000 | $3000 | $4000 |
Every model year
| Year | Combined | City | Highway | EPA fuel cost/yr | CO₂ g/mi | Trims |
|---|---|---|---|---|---|---|
| 2023 | 25 MPG | 22 | 29 | $3100 | 358 | 1 |
| 2021 | 28 MPG | 25 | 33 | $2750 | 314 | 1 |
| 2020 | 28 MPG | 25 | 33 | $2750 | 318 | 1 |
| 2019 | 28 MPG | 25 | 33 | $2750 | 317 | 1 |
| 2018 | 28 MPG | 25 | 33 | $2750 | 314 | 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 LS 500h ranks 104 on current figures, against a class average of 27.2 MPG.
Closest more-efficient alternatives in the same class: Ford Fusion FWD (25.3), Audi A6 quattro (25.5), Chrysler 200 (25.7), Alfa Romeo Giulia AWD (26), BMW 528i xDrive (26).
Tailpipe CO₂ is rated at 358 grams per mile, which works out to roughly 5.4 tonnes a year at 15,000 miles.
Questions
What MPG does the Lexus LS 500h get?
The 2023 Lexus LS 500h is rated at 25 MPG combined by the EPA — 22 city and 29 highway. Across all 5 model years in the database it averages 27.4 MPG, ranging from 25 to 28 depending on year and trim.
How much does a Lexus LS 500h cost in fuel per year?
At 25 MPG and 15,000 miles a year, it burns about 600 gallons — roughly $1920 a year with fuel at $3.20 a gallon, or $0.128 per mile. The EPA's own published annual figure for the 2023 model is $3100.
Has the Lexus LS 500h become more efficient over time?
No — it has actually gone backwards, from 28 MPG in 2018 to 25 in 2023. That usually reflects the model growing heavier, more powerful, or moving upmarket rather than the engineering getting worse.
Is the Lexus LS 500h efficient for its class?
It ranks 104 of 261 in the Midsize Cars class on current figures, against a class average of 27.2 MPG. That is 2.2 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.