2025 Porsche Cayenne S E-Hybrid Coupe: MPG and fuel economy
The 2025 Porsche Cayenne S E-Hybrid Coupe is a plug-in hybrid rated at 22 combined MPG by the U.S. Environmental Protection Agency. It returns 21 MPG in the city and 23 MPG on the highway.
This page collects every fuel-economy figure the EPA publishes for the 2025 Porsche Cayenne S E-Hybrid Coupe. 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.
Key takeaways
- Returns 48% worse combined MPG than the average car in the Standard Sport Utility Vehicle 4WD class for the 2025 model year (42.7 MPG class average).
- The most efficient car in the Standard Sport Utility Vehicle 4WD class for the 2025 model year is the Lucid Gravity GT w/20F21R wheels (2R) at 108 MPG.
- 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 Cayenne S E-Hybrid Coupe. 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 | 22 MPG |
| City MPG | 21 MPG |
| Highway MPG | 23 MPG |
| Annual fuel cost | $3,150 |
| Tailpipe CO₂ | 187 g/mi |
| Fuel type | Premium and Electricity |
How the 2025 Porsche Cayenne S E-Hybrid Coupe compares
The 2025 Porsche Cayenne S E-Hybrid Coupe returns 22 combined MPG. Cars in the Standard Sport Utility Vehicle 4WD class for the same model year average 42.7 MPG, which puts this car behind the class average by about 48%.
The most efficient car in the Standard Sport Utility Vehicle 4WD class for the 2025 model year is the Lucid Gravity GT w/20F21R wheels (2R) at 108 MPG. The bar chart below puts the Porsche Cayenne S E-Hybrid Coupe 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 681.8 gallons (the car's annual consumption at the rated MPG).
| Driving pattern | Estimated annual fuel cost |
|---|---|
| Light driver, 7,500 miles per year | $1,575 |
| Average driver, 15,000 miles per year | $3,150 |
| Heavy driver, 25,000 miles per year | $5,250 |
Compare against other Standard Sport Utility Vehicle 4WD for 2025
If you are cross-shopping the 2025 Porsche Cayenne S E-Hybrid Coupe, the most useful comparison is against the other cars in the Standard Sport Utility Vehicle 4WD 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 Lucid Gravity GT w/20F21R wheels (2R) leads this group at 108 MPG, 86 MPG ahead of the 2025 Porsche Cayenne S E-Hybrid Coupe.
Specifications
The 2025 Porsche Cayenne S E-Hybrid Coupe runs a 3-liter 6-cylinder turbocharged engine paired with a automatic (s8), sending power through all-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
- Standard Sport Utility Vehicle 4WD
- Engine
- 3L 6-cylinder turbocharged
- Transmission
- Automatic (S8)
- Drivetrain
- All-Wheel Drive
- Fuel type
- Premium and Electricity
- Annual petroleum use
- 6.2 barrels per year
- Start-stop system
- Yes
Common questions about the 2025 Porsche Cayenne S E-Hybrid Coupe
Quick answers to the questions people most often search for when looking up the 2025 Porsche Cayenne S E-Hybrid Coupe.
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Is the 2025 Porsche Cayenne S E-Hybrid Coupe fuel efficient?
Not particularly. The 2025 Porsche Cayenne S E-Hybrid Coupe returns 22 combined MPG, which trails the average car in the Standard Sport Utility Vehicle 4WD class for the same model year by about 48%. -
What MPG does the 2025 Porsche Cayenne S E-Hybrid Coupe get?
The EPA rates the 2025 Porsche Cayenne S E-Hybrid Coupe at 22 combined MPG, 21 MPG in city driving, and 23 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 Cayenne S E-Hybrid Coupe per year?
The EPA estimates an annual fuel cost of $3,150 for the 2025 Porsche Cayenne S E-Hybrid Coupe. 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 Cayenne S E-Hybrid Coupe require premium gas?
Yes. The EPA lists the 2025 Porsche Cayenne S E-Hybrid Coupe 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. -
How much CO₂ does the 2025 Porsche Cayenne S E-Hybrid Coupe emit?
Tailpipe CO₂ emissions are 187 g/mi. Multiplied across a typical year of driving (15,000 miles) that works out to about 2,805 kilograms of CO₂. -
What is the difference between the city and highway MPG of the 2025 Porsche Cayenne S E-Hybrid Coupe?
City driving returns 21 MPG and highway driving returns 23 MPG, a gap of 2 MPG. The two figures are close enough that the car will hold its rated efficiency well across most driving patterns. -
What engine is in the 2025 Porsche Cayenne S E-Hybrid Coupe?
The 2025 Porsche Cayenne S E-Hybrid Coupe has a 3-liter 6-cylinder turbocharged engine (EPA description: SIDI; PHEV). -
What transmission and drivetrain does the 2025 Porsche Cayenne S E-Hybrid Coupe have?
The 2025 Porsche Cayenne S E-Hybrid Coupe comes with a automatic (s8) transmission and all-wheel drive. All-wheel-drive variants typically read 1 to 3 MPG lower than the front-wheel-drive equivalent of the same engine, since the extra hardware adds weight and parasitic loss. -
How does the 2025 Porsche Cayenne S E-Hybrid Coupe compare to the best car in its class?
The most efficient car in the Standard Sport Utility Vehicle 4WD class for the 2025 model year is the Lucid Gravity GT w/20F21R wheels (2R) at 108 combined MPG. The Porsche Cayenne S E-Hybrid Coupe returns 22 MPG, a gap of 86 MPG. If you are comparing on fuel economy alone, the class leader is worth a look. -
How much petroleum does the 2025 Porsche Cayenne S E-Hybrid Coupe use per year?
The EPA estimates the 2025 Porsche Cayenne S E-Hybrid Coupe consumes about 6.2 barrels of petroleum per year, based on the standard 15,000 miles of driving. A barrel is 42 U.S. gallons of crude oil, which is refined into gasoline plus other products.
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.