The 2020 Porsche 911 Carrera S gets 20 MPG combined. No one buys a 911 expecting Prius-like gas mileage. This is a high-performance sports car, and fuel economy is a secondary consideration. The Carrera S isn’t about saving money at the pump; it’s about exhilaration, precision, and the uniquely visceral driving experience only a 911 can offer. Buyers in this segment prioritize performance and prestige above all else, understanding that a bit of extra fuel cost is simply the price.

City and highway performance

The EPA estimates the 2020 Porsche 911 Carrera S achieves 18 MPG in the city and 24 MPG on the highway. The city figure reflects the stop-and-go nature of urban driving, where the engine is less efficient due to frequent acceleration and deceleration. The highway number is more representative of consistent cruising speeds, allowing the 3.0L turbocharged flat-six to operate more efficiently. However, “highway” in a 911 very rarely means a gentle 65 MPH cruise in the slow lane. Most owners will be exploiting the car’s performance in ways that will severely impact that 24 MPG figure.

Annual fuel cost

The EPA estimates that the annual fuel cost for the 2020 Porsche 911 Carrera S is $2,900. This figure is based on driving 15,000 miles per year, with 55% of those miles driven in the city and 45% on the highway. The calculation also assumes national average fuel prices. Keep in mind that premium fuel is required, and prices can fluctuate significantly depending on location and time of year. This $2,900 figure provides a baseline, but your actual fuel costs may vary considerably depending on your driving habits and fuel prices in your area.

Real-world expectations

While the EPA numbers offer a standardized benchmark, real-world fuel economy for the 2020 Porsche 911 Carrera S typically falls a bit short, especially for drivers who regularly indulge in the car’s performance capabilities. Expect to see numbers closer to the combined figure in everyday driving, and potentially much lower if you frequently visit the track or explore the upper limits of the tachometer. A heavy foot will quickly erode fuel economy; the more aggressive you are with the throttle, the more fuel you’ll consume. The allure of a 911 is its performance, and resisting that temptation can be difficult.

How it compares

Compared to other performance cars in its class, the 2020 Porsche 911 Carrera S holds its own, but it’s not a segment leader in fuel efficiency. For example, the Chevrolet Corvette Stingray (with the automatic transmission) achieves a respectable 19 MPG city and 27 MPG highway, offering a slightly better overall fuel economy. The BMW M4 Competition posts EPA numbers of 16 MPG city and 23 MPG highway, demonstrating slightly worse fuel economy in both environments. Buyers considering the 911 typically cross-shop with other high-performance coupes and convertibles, but they are not usually comparing based on fuel economy figures. The unique character, driving dynamics, and brand cachet of the 911 often outweigh any minor differences in MPG. For a broader view, take a look at 911 MPG across all years or all Porsche fuel economy data.

Tips to maximize efficiency

While it might seem counterintuitive to focus on fuel efficiency in a sports car, you can still employ some strategies to improve MPG without sacrificing too much driving enjoyment. Use the car’s drive modes judiciously. Selecting “Normal” or “Eco” mode (if equipped) will remap the throttle response and shift points to prioritize fuel efficiency over outright performance. These modes are best suited for highway cruising or mundane city commutes.

Pay close attention to tire pressure. Properly inflated tires reduce rolling resistance, which translates to better fuel economy. Check your tire pressure regularly and inflate them to the recommended levels, which can be found on the sticker inside the driver’s side doorjamb or in the owner’s manual.

Avoid hard acceleration and braking whenever possible. Smooth, consistent driving is the key to maximizing fuel efficiency. Anticipate traffic flow and try to maintain a steady speed, avoiding sudden bursts of acceleration or abrupt braking. Every sudden change in speed requires extra energy, which in turn consumes more fuel.

Minimize idling. If you’re stopped for more than a minute, turn off the engine. Idling consumes fuel without covering any distance. While modern engines are designed to restart quickly and easily, excessive idling can still have a noticeable impact on your overall fuel economy.