The 2024 Porsche 911 Carrera GTS 3.0L 6-cyl gets 19 MPG combined. No one buys a GTS expecting Prius-like efficiency. This is a performance car, a meticulously engineered machine designed to deliver raw exhilaration. The fuel economy, or lack thereof, is simply the cost of entry into a very exclusive club.

City and highway performance

The EPA estimates 17 MPG in the city and 23 MPG on the highway for the 2024 911 Carrera GTS equipped with the automatic (AM-S8) transmission. These numbers reflect the realities of a high-performance, turbocharged engine coupled with a relatively heavy curb weight (around 3,400 lbs depending on options). Stop-and-go city driving will punish the fuel tank, as will frequent bursts of acceleration—a temptation few GTS owners can resist. On the open road, the 911 can stretch its fuel a bit further, but even then, the relatively short gearing means the engine is always ready to deliver instant power, impacting overall efficiency. If you’re considering a GTS, you’re likely more concerned with the car’s 0-60 time than its ability to sip fuel.

Annual fuel cost

According to the EPA, the annual fuel cost for the 2024 Porsche 911 Carrera GTS 3.0L 6-cyl is $3,050. This figure is based on driving 15,000 miles per year and using national average fuel prices. Actual costs will vary depending on driving habits, local fuel prices, and the type of fuel used (premium is required). The $3,050 figure is a reminder of the financial commitment involved in owning a high-performance vehicle. Owners likely budget for this expense accordingly, and it rarely factors greatly in the purchase decision.

Real-world expectations

While the EPA figures offer a standardized benchmark, real-world fuel economy often deviates. Aggressive driving, track days, and spirited weekend cruises will undoubtedly lower the average MPG. Conversely, careful highway driving with a light foot might yield slightly better results. Don’t expect to consistently achieve the EPA’s 23 MPG highway figure if you’re regularly engaging the car’s power. These cars are built to be driven hard, and that inevitably affects fuel consumption. For a more view, you can always check 911 MPG across all years.

How it compares

Compared to other high-performance cars in its class, the 911 GTS’s fuel economy is generally in line with expectations. The BMW M4 Competition, for example, gets an EPA-estimated 19 MPG combined (16 city/23 highway). A Mercedes-AMG C63 S Coupe fairs similarly, at around 18 MPG combined. The Audi RS5 Coupe, with its turbocharged V6, achieves around 21 MPG combined. While the RS5 offers a slight advantage, the 911 GTS offers a driving experience uniquely its own. Ultimately, buyers in this segment prioritize performance and engagement above all else. Those seeking significantly better MPG may look toward hybrid sports cars that make different trade-offs. For context on the entire Porsche portfolio, navigate to all Porsche fuel economy data.

Tips to maximize efficiency

While the 911 Carrera GTS is unlikely to ever be considered frugal, there are ways to reduce its thirst for fuel. Avoid unnecessary idling, particularly when the engine is cold. Idling wastes fuel and increases emissions without providing any benefit. Instead, start driving gently to allow the engine to warm up efficiently.

Use the car’s various driving modes. The “Normal” mode, if equipped, will optimize the car for fuel efficiency by adjusting throttle response and shift patterns. While it may dull the driving experience slightly, it can make a noticeable difference on longer journeys.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, which reduces fuel economy and can negatively affect handling. Check your tire pressures regularly and inflate them to the manufacturer’s recommended levels, typically found on a sticker in the driver’s side doorjamb.

Minimize aerodynamic drag. Remove any unnecessary items from the roof or exterior of the car, such as roof racks or cargo carriers. These items increase drag and reduce fuel efficiency, especially at higher speeds.

Plan routes strategically. Avoid congested areas and prioritize smooth, flowing roads whenever possible. Stop-and-go traffic dramatically reduces fuel economy, so choosing routes that minimize braking and acceleration can make a substantial difference.