17 MPG combined is likely not a primary concern for Porsche Panamera GTS Sport Turismo (ST) buyers. These owners value performance, exclusivity, and a visceral driving experience more than fuel efficiency. The GTS ST is as much a statement as it is a practical wagon, and its fuel consumption is a part of that package.

City and highway performance

The EPA estimates the Panamera GTS ST gets 15 MPG in the city and 20 MPG on the highway. These numbers, from standardized tests, show the best-case scenario for fuel mileage. Expect numbers closer to 15 MPG, especially if you enjoy the sound and acceleration of the twin-turbo V8. Reaching 20 MPG on the highway is possible, but requires a light foot making it a challenge with the Porsche’s eagerness to accelerate.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2022 Porsche Panamera GTS ST at $3,400. This calculation is based on 15,000 miles of driving per year, with 55% in the city and 45% on the highway. This also uses the national average fuel price, so regional price differences and gas price changes will affect your actual cost. Owners who drive their GTS ST more or drive more aggressively should plan a larger fuel budget.

Real-world expectations

While the EPA provides a starting point, actual fuel economy changes with driving style, traffic, and terrain. Drivers who often use Sport or Sport Plus modes, or drive in stop-and-go traffic, will probably see mileage below the EPA estimates. Drivers who accelerate gently and use the car mainly for highway trips might get close to, or even slightly better than, the 20 MPG highway number. Consider the EPA numbers a starting point, not a guarantee. Reviewing owner forums can provide anecdotal evidence of typical MPG for all PANAMERA MPG across all years.

How it compares

The Panamera GTS ST’s fuel economy is similar to other high-performance wagons. The Audi RS6 Avant, with a similar twin-turbo V8, has EPA figures almost exactly matching the Porsche. The Mercedes-AMG E63 S Wagon, with even more power, is also close to the Panamera’s fuel consumption. Shoppers comparing all Porsche fuel economy data will notice this is a thirsty platform. Someone considering a more economical option might look at the Volvo V60 Polestar Engineered wagon with its plug-in hybrid powertrain, which improves fuel economy while sacrificing some of the thrill and performance of the Panamera GTS ST.

Tips to maximize efficiency

Use the car’s adaptive cruise control on the highway to keep a steady speed and reduce unnecessary acceleration. This system can really help MPG on long trips, especially in moderate traffic.

Try not to use Sport or Sport Plus modes all the time. These modes improve the driving experience, but also consume more fuel. “Normal” mode is best for everyday driving.

Make sure your tires have the correct air pressure. Underinflated tires increase rolling resistance, which lowers fuel economy. Check your tire pressures often and keep them at the recommended levels.

Avoid idling. Modern engines don’t need long warm-up times. If you’re stopped for more than a minute or two, turn off the engine to save fuel.

Reduce weight. Removing extra weight from your car, like golf clubs or luggage you don’t need, can slightly improve fuel economy, even if it isn’t much.