The 2021 Porsche Panamera 4 Sport Turismo with the 2.9L V6 engine has an EPA fuel economy estimate of 20 MPG combined. While this number might seem low, it doesn’t tell the whole story. The Panamera 4 ST is for those who demand performance, luxury, and practicality in a uniquely styled package, not necessarily those focused on maximizing mileage. Fuel economy is a consideration, but it’s not the main reason someone considers a near six-figure, high-performance wagon. It’s the cost to experience Porsche’s engineering and the Sport Turismo’s versatility.

City and highway performance

The EPA estimates 18 MPG in the city and 23 MPG on the highway. These figures show the balance Porsche engineers achieved between power and efficiency. The 2.9L twin-turbo V6 provides plenty of power at any speed, leading to a more relaxed driving experience than an engine that constantly requires downshifting. The eight-speed automatic transmission (AM-S8) is programmed for rapid shifts during spirited driving and optimized fuel economy during steady-state cruising, which helps the highway MPG. However, in the city, the Panamera’s weight and performance needs reduce fuel consumption due to frequent acceleration and braking.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2021 Porsche Panamera 4 ST at $2,900. This calculation is based on 15,000 miles of driving per year, with a mix of city and highway driving, using a national average fuel price. While $2,900 is a significant expense, many Panamera owners accept it as part of ownership. This expense factors into the cost of owning a luxury performance vehicle. People drawn to the Panamera Sport Turismo typically care more about performance and styling than saving money on gas.

Real-world expectations

While the EPA estimates provide a baseline, real-world fuel economy changes based on driving style, road conditions, and maintenance. Aggressive acceleration, frequent use of Sport mode, and extended idling will hurt fuel efficiency. Heavy traffic, hilly terrain, and heavy loads can reduce MPG. However, careful drivers using adaptive cruise control on long highway trips, and using a lighter touch in the city, might get close to the EPA estimates. See PANAMERA MPG across all years.

How it compares

The Panamera 4 ST’s fuel economy is reasonable compared to other high-performance luxury vehicles given its capabilities. The Mercedes-AMG E63 S Wagon offers similar performance and practicality. It has a high horsepower rating, but its fuel economy is close to the Panamera, often around 19 MPG combined. The Audi RS6 Avant is another competitor, and reports show average MPG in the high teens. Buyers of these vehicles understand the compromises involved. Small differences in fuel economy might matter, but factors like brand preference, styling, and specific performance will likely drive the decision.

See all Porsche fuel economy data.

Tips to Maximize Efficiency

Use the Panamera’s driving modes. Selecting “Normal” or “Eco” mode optimizes engine and transmission settings for fuel efficiency by reducing throttle response and encouraging earlier upshifts. While tempting, avoid constantly using the V6’s full power. Measured acceleration and consistent speeds are critical to getting the most from each gallon.

Make sure the tires are properly inflated to the recommended pressure on the driver’s side doorjamb. Underinflated tires increase rolling resistance, which hurts fuel economy. Check and adjust tire pressure regularly, especially when the temperature changes.

Reduce unneeded weight. Carrying too much cargo in the trunk or on the roof rack increases fuel consumption. Remove anything not needed for daily driving.

Avoid long periods of idling. If you expect to stop for more than a minute, turn off the engine. Modern engines are designed to start quickly and efficiently, so restarting uses less fuel than idling.