20 MPG combined is not the main reason someone buys a 2023 Porsche 911 Carrera S. This is a performance machine, a precisely engineered sports car designed for driving pleasure above all else. Its owners prioritize acceleration, handling, and the visceral experience of a flat-six engine over squeezing every last mile from a gallon of premium fuel. Yet, understanding the fuel efficiency remains part of the ownership experience.

City and highway performance

The EPA estimates for the 2023 911 Carrera S with the 3.0L turbocharged six-cylinder engine and eight-speed automatic (AM-S8) transmission are 18 MPG in the city and 23 MPG on the highway. These numbers reflect the realities of stop-and-go traffic and sustained high-speed cruising. The city figure, in particular, highlights the engine’s thirst when frequently accelerating from a standstill. While 23 MPG on the highway is respectable considering the car’s capabilities, remember that any spirited driving, especially quick bursts for overtaking, will quickly impact that number.

Annual fuel cost

The EPA estimates that the annual fuel cost for the 2023 Porsche 911 Carrera S is $2,900. This figure is based on driving 15,000 miles per year and using the national average fuel price for premium gasoline, which this Porsche requires. Keep in mind that fuel prices fluctuate, and your personal driving habits significantly influence the actual amount you spend. Drivers who frequently engage in aggressive acceleration or spend a considerable amount of time in city driving will likely exceed the $2,900 estimate substantially. For drivers looking to compare this to all Porsche fuel economy data, there’s a wide range.

Real-world expectations

Real-world MPG for the 2023 911 Carrera S often differs from the EPA estimates. Factors such as driving style, traffic conditions, and even tire pressure play a significant role. Owners who frequently use the car’s performance potential will likely see numbers closer to the low end of the EPA range or even below. Conversely, drivers who adopt a more relaxed driving style on the highway might achieve slightly better fuel economy. However, it’s safe to say that consistently exceeding the EPA estimates will be a challenge for most drivers given the car’s inherent temptation to unleash its power.

How it compares

Compared to other sports cars, the 2023 Porsche 911 Carrera S occupies a middle ground in terms of fuel efficiency. The Chevrolet Corvette Stingray, for example, achieves a slightly better EPA combined rating of 19 MPG with its V8 engine and automatic transmission. A BMW M4 Competition Coupe manages around 18 MPG combined. However, cars like the Jaguar F-TYPE R with its supercharged V8 often deliver much lower numbers in the 16-17 MPG range. Buyers considering the 911 might also cross-shop the Porsche 718 Cayman GTS 4.0, which offers similarly engaging performance but with a slightly more frugal fuel consumption on average. But for a deeper dive into the 911 MPG across all years, the trends are clear.

Tips to maximize efficiency

While the primary focus of 911 ownership isn’t less gas, mindful driving can improve fuel efficiency. Avoid unnecessary hard acceleration and braking. Smooth, progressive inputs will not only conserve fuel but also provide a more refined driving experience.

Ensure that your tires are properly inflated to the recommended pressure. Underinflated tires increase rolling resistance, which directly impacts fuel economy. Check your tire pressures regularly, especially before long drives.

When possible, use the car’s “Normal” driving mode. This mode optimizes engine and transmission settings for fuel efficiency, while still providing adequate performance for everyday driving. Save the “Sport” and “Sport Plus” modes for those moments when you truly want to unleash the Carrera S’s full potential.

Reduce unnecessary weight in the vehicle. Carrying extra items in the trunk or passenger compartment adds weight, requiring the engine to work harder and consume more fuel. Remove any items that aren’t essential for your journey.

Consider planning your routes to avoid stop-and-go traffic whenever possible. Constant acceleration and deceleration significantly reduce fuel economy. Opt for routes with more consistent speeds and fewer traffic lights.