Porsche Panamera GTS ST
17 MPG The 2023 Porsche Panamera GTS ST is EPA-rated at 17 MPG combined (15 city / 20 highway). Over 15,000 miles a year that is about 882 gallons, $2824 a year in fuel, or $0.188 per mile at $3.20/gal.
Across its full 2019–2023 run it averages 17.4 MPG, falling by 1 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 | $0.147 | $1471 | $2206 | $2941 |
| $3.00/gal | $0.176 | $1765 | $2647 | $3529 |
| $3.20/gal | $0.188 | $1882 | $2824 | $3765 |
| $3.50/gal | $0.206 | $2059 | $3088 | $4118 |
| $4.00/gal | $0.235 | $2353 | $3529 | $4706 |
| $4.50/gal | $0.265 | $2647 | $3971 | $5294 |
| $5.00/gal | $0.294 | $2941 | $4412 | $5882 |
Every model year
| Year | Combined | City | Highway | EPA fuel cost/yr | CO₂ g/mi | Trims |
|---|---|---|---|---|---|---|
| 2023 | 17 MPG | 15 | 20 | $4550 | 520 | 1 |
| 2022 | 17 MPG | 15 | 20 | $4550 | 520 | 1 |
| 2021 | 17 MPG | 15 | 20 | $4550 | 520 | 1 |
| 2020 | 18 MPG | 15 | 22 | $4300 | 503 | 1 |
| 2019 | 18 MPG | 15 | 22 | $4300 | 503 | 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 149 large cars models tracked here, the Porsche Panamera GTS ST ranks 117 on current figures, against a class average of 21.6 MPG.
Closest more-efficient alternatives in the same class: Chevrolet Caprice (17.3), BMW 550i xDrive Gran Turismo (18), BMW 740il (18), Buick Roadmaster (18), Cadillac Brougham (18).
Tailpipe CO₂ is rated at 520 grams per mile, which works out to roughly 7.8 tonnes a year at 15,000 miles.
Questions
What MPG does the Porsche Panamera GTS ST get?
The 2023 Porsche Panamera GTS ST is rated at 17 MPG combined by the EPA — 15 city and 20 highway. Across all 5 model years in the database it averages 17.4 MPG, ranging from 17 to 18 depending on year and trim.
How much does a Porsche Panamera GTS ST cost in fuel per year?
At 17 MPG and 15,000 miles a year, it burns about 882 gallons — roughly $2824 a year with fuel at $3.20 a gallon, or $0.188 per mile. The EPA's own published annual figure for the 2023 model is $4550.
Has the Porsche Panamera GTS ST become more efficient over time?
No — it has actually gone backwards, from 18 MPG in 2019 to 17 in 2023. That usually reflects the model growing heavier, more powerful, or moving upmarket rather than the engineering getting worse.
Is the Porsche Panamera GTS ST efficient for its class?
It ranks 117 of 149 in the Large Cars class on current figures, against a class average of 21.6 MPG. That is 4.6 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.