Porsche 911 GT3 RS
16 MPG The 2024 Porsche 911 GT3 RS is EPA-rated at 16 MPG combined (14 city / 18 highway). Over 15,000 miles a year that is about 938 gallons, $3000 a year in fuel, or $0.200 per mile at $3.20/gal.
Across its full 2007–2024 run it averages 16.6 MPG, falling by 2 MPG over 8 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 | $0.156 | $1563 | $2344 | $3125 |
| $3.00/gal | $0.188 | $1875 | $2813 | $3750 |
| $3.20/gal | $0.200 | $2000 | $3000 | $4000 |
| $3.50/gal | $0.219 | $2188 | $3281 | $4375 |
| $4.00/gal | $0.250 | $2500 | $3750 | $5000 |
| $4.50/gal | $0.281 | $2813 | $4219 | $5625 |
| $5.00/gal | $0.313 | $3125 | $4688 | $6250 |
Every model year
| Year | Combined | City | Highway | EPA fuel cost/yr | CO₂ g/mi | Trims |
|---|---|---|---|---|---|---|
| 2024 | 16 MPG | 14 | 18 | $4800 | 570 | 1 |
| 2023 | 16 MPG | 14 | 18 | $4800 | 570 | 1 |
| 2019 | 16 MPG | 15 | 19 | $4800 | 539 | 1 |
| 2016 | 17 MPG | 15 | 20 | $4550 | 535 | 1 |
| 2011 | 15.5 MPG | 13.5 | 19.5 | $4975 | 574 | 2 |
| 2010 | 16 MPG | 14 | 20 | $4800 | 555 | 1 |
| 2008 | 18 MPG | 15 | 22 | $4300 | 494 | 1 |
| 2007 | 18 MPG | 15 | 22 | $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 105 two seaters models tracked here, the Porsche 911 GT3 RS ranks 70 on current figures, against a class average of 21.4 MPG.
Closest more-efficient alternatives in the same class: Mercedes-Benz SL500 (17), Mercedes-Benz SL65 AMG (17), Acura NSX (18), Cadillac XLR (18), Chevrolet Corvette (18).
Tailpipe CO₂ is rated at 570 grams per mile, which works out to roughly 8.6 tonnes a year at 15,000 miles.
Questions
What MPG does the Porsche 911 GT3 RS get?
The 2024 Porsche 911 GT3 RS is rated at 16 MPG combined by the EPA — 14 city and 18 highway. Across all 8 model years in the database it averages 16.6 MPG, ranging from 15 to 18 depending on year and trim.
How much does a Porsche 911 GT3 RS cost in fuel per year?
At 16 MPG and 15,000 miles a year, it burns about 938 gallons — roughly $3000 a year with fuel at $3.20 a gallon, or $0.200 per mile. The EPA's own published annual figure for the 2024 model is $4800.
Has the Porsche 911 GT3 RS become more efficient over time?
No — it has actually gone backwards, from 18 MPG in 2007 to 16 in 2024. That usually reflects the model growing heavier, more powerful, or moving upmarket rather than the engineering getting worse.
Is the Porsche 911 GT3 RS efficient for its class?
It ranks 70 of 105 in the Two Seaters class on current figures, against a class average of 21.4 MPG. That is 5.4 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.