2025 Porsche 911 Carrera S: MPG and fuel economy
The 2025 Porsche 911 Carrera S is rated by the U.S. Environmental Protection Agency at 20 combined MPG, with 17 MPG in the city and 24 MPG on the highway. That lands well below the average for cars in the Minicompact Cars class in the same model year.
This page collects every fuel-economy figure the EPA publishes for the 2025 Porsche 911 Carrera S. Below you will find the headline combined, city, and highway MPG, the estimated annual fuel cost at three different driving levels, the tailpipe CO₂ emissions, and a full breakdown of the engine and drivetrain. If you want to know whether this generation got more or less efficient over the years, the year-over-year table further down covers every model year the EPA has rated.
Key takeaways
- Returns 23% worse combined MPG than the average car in the Minicompact Cars class for the 2025 model year (26 MPG class average).
- The most efficient car in the Minicompact Cars class for the 2025 model year is the Fiat 500e at 116 MPG.
- EPA estimates this car costs around $6,500 more in fuel over five years than an average new vehicle of the same model year.
- Requires premium gasoline, which typically adds about 40 to 60 cents per gallon to the EPA's annual fuel cost estimate.
Fuel economy at a glance
These are the EPA's official ratings for the 2025 Porsche 911 Carrera S. The numbers come from a standardised laboratory test cycle and are the same figures that appear on the window sticker of every new car. Real-world mileage varies with driving style, weather, fuel quality, and how heavily loaded the car is.
Combined MPG is a 55/45 weighted blend of the city and highway test cycles. The EPA uses it as the single number you can compare across the entire dataset, including hybrids and EVs (which use the equivalent MPGe figure).
| Combined MPG | 20 MPG |
| City MPG | 17 MPG |
| Highway MPG | 24 MPG |
| Annual fuel cost | $3,450 |
| Tailpipe CO₂ | 432 g/mi |
| Fuel type | Premium |
How the 2025 Porsche 911 Carrera S compares
The 2025 Porsche 911 Carrera S returns 20 combined MPG. Cars in the Minicompact Cars class for the same model year average 26 MPG, which puts this car behind the class average by about 23%.
The most efficient car in the Minicompact Cars class for the 2025 model year is the Fiat 500e at 116 MPG. The bar chart below puts the Porsche 911 Carrera S alongside the class best and the class average so you can see the full picture.
For broader context, the average new car of the 2025 model year (across all classes) returns 44.3 MPG. Larger vehicles pull the all-cars average down, so do not use that figure on its own to judge a small car or a hybrid. The full list of the most efficient cars of the 2025 model year is on its own page.
Annual fuel cost across driving patterns
The headline annual fuel cost the EPA publishes assumes 15,000 miles of driving per year and a fuel mix of 55% city and 45% highway. The dollar figure is calculated using the EPA's current reference price for premium gasoline, which is $4.61/gallon. EPA updates that reference periodically rather than tracking live pump prices, so treat it as a window-sticker estimate rather than today's pump number.
The table below scales the EPA's number to three common driving patterns. The combined MPG and the reference fuel price stay constant, only the annual mileage changes. To get a current-prices estimate, take your local gas price and multiply by 750 gallons (the car's annual consumption at the rated MPG).
| Driving pattern | Estimated annual fuel cost |
|---|---|
| Light driver, 7,500 miles per year | $1,725 |
| Average driver, 15,000 miles per year | $3,450 |
| Heavy driver, 25,000 miles per year | $5,750 |
Year-over-year MPG for the Porsche 911 Carrera S
The EPA has rated the Porsche 911 Carrera S across 17 model years, from 2010 Porsche 911 Carrera S through 2026 Porsche 911 Carrera S. The numbers below are the best combined MPG figure the EPA published for each year, which lets you see when the car was at its most efficient and how recent generations stack up.
Combined MPG has stayed in roughly the same range across the run. The peak rating came with the 2017 Porsche 911 Carrera S at 24 MPG.
| Year | Combined MPG | Open year page |
|---|---|---|
| 2026 | 20 MPG | 2026 Porsche 911 Carrera S |
| 2025 | 20 MPG | this page |
| 2024 | 21 MPG | 2024 Porsche 911 Carrera S |
| 2023 | 21 MPG | 2023 Porsche 911 Carrera S |
| 2022 | 21 MPG | 2022 Porsche 911 Carrera S |
| 2021 | 21 MPG | 2021 Porsche 911 Carrera S |
| 2020 | 20 MPG | 2020 Porsche 911 Carrera S |
| 2019 | 24 MPG | 2019 Porsche 911 Carrera S |
| 2018 | 24 MPG | 2018 Porsche 911 Carrera S |
| 2017 | 24 MPG | 2017 Porsche 911 Carrera S |
| 2016 | 22 MPG | 2016 Porsche 911 Carrera S |
| 2015 | 22 MPG | 2015 Porsche 911 Carrera S |
| 2014 | 22 MPG | 2014 Porsche 911 Carrera S |
| 2013 | 22 MPG | 2013 Porsche 911 Carrera S |
| 2012 | 21 MPG | 2012 Porsche 911 Carrera S |
| 2011 | 21 MPG | 2011 Porsche 911 Carrera S |
| 2010 | 22 MPG | 2010 Porsche 911 Carrera S |
Compare against other Minicompact Cars for 2025
If you are cross-shopping the 2025 Porsche 911 Carrera S, the most useful comparison is against the other cars in the Minicompact Cars class for the same model year. The list below shows the highest-MPG peers, ranked from most to least efficient. Click any of them to open its full page.
The Fiat 500e leads this group at 116 MPG, 96 MPG ahead of the 2025 Porsche 911 Carrera S.
Specifications
The 2025 Porsche 911 Carrera S runs a 3-liter 6-cylinder turbocharged engine paired with a automatic (am-s8), sending power through rear-wheel drive.
Engine, transmission, and drivetrain together drive most of the variation in fuel economy across trims. A larger engine moves the car with less effort but burns more fuel. A turbo lets a small engine punch above its weight, often without much MPG penalty. All-wheel drive adds traction and weight, and usually costs a couple of MPG compared with two-wheel drive of the same engine.
- Vehicle class
- Minicompact Cars
- Engine
- 3L 6-cylinder turbocharged
- Transmission
- Automatic (AM-S8)
- Drivetrain
- Rear-Wheel Drive
- Fuel type
- Premium
- Annual petroleum use
- 14.9 barrels per year
- Start-stop system
- Yes
Common questions about the 2025 Porsche 911 Carrera S
Quick answers to the questions people most often search for when looking up the 2025 Porsche 911 Carrera S.
-
Is the 2025 Porsche 911 Carrera S fuel efficient?
Not particularly. The 2025 Porsche 911 Carrera S returns 20 combined MPG, which trails the average car in the Minicompact Cars class for the same model year by about 23%. -
What MPG does the 2025 Porsche 911 Carrera S get?
The EPA rates the 2025 Porsche 911 Carrera S at 20 combined MPG, 17 MPG in city driving, and 24 MPG on the highway. Real-world numbers depend on your driving style, the weather, and how loaded the car is. -
How much does it cost to fuel a 2025 Porsche 911 Carrera S per year?
The EPA estimates an annual fuel cost of $3,450 for the 2025 Porsche 911 Carrera S. That figure assumes 15,000 miles of driving per year, a 55% city and 45% highway split, and the EPA's published average fuel price for the rated fuel grade. -
Does the 2025 Porsche 911 Carrera S require premium gas?
Yes. The EPA lists the 2025 Porsche 911 Carrera S as requiring premium gasoline. Running it on regular can reduce performance and may affect engine warranties, so it is not a recommended way to save at the pump. -
Has the Porsche 911 Carrera S become more fuel efficient over time?
Combined MPG has stayed close to flat across the run. Both the earliest (2010 Porsche 911 Carrera S, 22 MPG) and most recent (2026 Porsche 911 Carrera S, 20 MPG) versions sit in the same range. -
How much CO₂ does the 2025 Porsche 911 Carrera S emit?
Tailpipe CO₂ emissions are 432 g/mi. Multiplied across a typical year of driving (15,000 miles) that works out to about 6,480 kilograms of CO₂. -
What is the difference between the city and highway MPG of the 2025 Porsche 911 Carrera S?
City driving returns 17 MPG and highway driving returns 24 MPG, a gap of 7 MPG. A spread that wide is typical of cars with conventional automatic or manual transmissions, where stop-start city traffic eats more fuel than a steady highway cruise. -
What engine is in the 2025 Porsche 911 Carrera S?
The 2025 Porsche 911 Carrera S has a 3-liter 6-cylinder turbocharged engine (EPA description: SIDI). -
What transmission and drivetrain does the 2025 Porsche 911 Carrera S have?
The 2025 Porsche 911 Carrera S comes with a automatic (am-s8) transmission and rear-wheel drive. -
How does the 2025 Porsche 911 Carrera S compare to the best car in its class?
The most efficient car in the Minicompact Cars class for the 2025 model year is the Fiat 500e at 116 combined MPG. The Porsche 911 Carrera S returns 20 MPG, a gap of 96 MPG. If you are comparing on fuel economy alone, the class leader is worth a look.
Source: U.S. EPA fuel economy dataset. Annual fuel cost figures assume 15,000 miles of driving per year and a 55% city, 45% highway split. Real-world mileage varies with driving conditions, vehicle maintenance, fuel quality, and driver behaviour.