20 MPG combined likely isn’t a major concern for most buyers of a 2015 Porsche Panamera 4S Executive. This long-wheelbase sedan prioritizes performance, luxury, and exclusivity over fuel efficiency. The Panamera 4S Executive isn’t purchased to save money on gasoline; it’s purchased to transport executives and clients in comfort and style, with surprisingly agile handling for a car of its size.

City and highway performance

The EPA estimates the 2015 Panamera 4S Executive at 17 MPG in the city and 26 MPG on the highway. These figures reflect how the 3.0L turbocharged V6 performs in simulated driving conditions. City driving will see the seven-speed automatic transmission shifting through gears to keep the engine in its optimal power band, while frequent stops and starts and idling will lower fuel economy. The highway figure of 26 MPG is more achievable on long cruises, but aggressive acceleration and speeds above 75 mph will quickly reduce that number. Expect highway fuel economy somewhat lower if you’re commonly using the Panamera’s power to pass slower traffic.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2015 Porsche Panamera 4S Executive at $2,900. This calculation is based on driving 15,000 miles per year and using the EPA’s estimated combined fuel economy and national average fuel prices. While this figure provides a benchmark, individual fuel costs will vary depending on driving habits, local fuel prices, and the type of fuel used. This model requires premium gasoline, which adds to the overall cost of ownership. View all Porsche fuel economy data to see how other models compare.

Real-world expectations

Expect your fuel economy to fluctuate based on your driving style and typical routes. If you spend most of your time in stop-and-go traffic, achieving 17 MPG in the city will be a challenge. However, if you primarily drive on the highway at moderate speeds, you might exceed the EPA’s 26 MPG estimate.

If you have a heavy foot or live in a congested urban area, expect lower figures than someone who primarily uses the car for longer, more leisurely drives. Consider your personal driving habits and typical driving conditions to estimate your actual fuel costs.

How it compares

Compared to its competitors, the 2015 Panamera 4S Executive’s fuel economy is generally in line with other performance-oriented luxury sedans. The BMW 740Li xDrive, for instance, achieves an EPA-estimated 22 MPG combined with its 3.0L turbocharged inline-six. The Mercedes-Benz S550 4Matic, with its larger 4.7L V8, returns around 19 MPG combined. An Audi A8 L 3.0T, another competitor, is close at roughly 22 MPG combined. These comparisons matter because buyers in this segment often cross-shop these models, weighing performance, features, and brand cachet alongside fuel efficiency. For a broader view, examine PANAMERA MPG across all years.

Tips to maximize efficiency

Avoid aggressive acceleration and braking. The Panamera 4S Executive can accelerate rapidly, but frequent bursts of speed will significantly reduce fuel economy. Gentle acceleration and smooth braking will help conserve fuel, particularly in city driving. Anticipate traffic flow and maintain a consistent speed whenever possible.

Use the car’s driving modes. The Panamera features different driving modes that affect throttle response, shift points, and other parameters. Selecting “Normal” or “Eco” mode will optimize the car for fuel efficiency. Sport and Sport Plus modes prioritize performance over fuel economy, which should be reserved for appropriate driving conditions.

Ensure proper tire inflation. Correctly inflated tires reduce rolling resistance, which improves fuel efficiency. Check your tire pressure regularly and inflate them to the recommended levels as indicated on the tire placard or in the owner’s manual. Even a slight under-inflation can impact fuel economy.

Minimize idling. Excessive idling consumes fuel without covering any distance. If you anticipate being stopped for more than a minute, turn off the engine. Restarting the engine uses less fuel than idling for extended periods. This is relevant given the Panamera’s powerful starter motor and relatively quick start-up time.

Keep the car well-maintained. Regular maintenance, including oil changes, air filter replacements, and spark plug replacements, ensures the engine is running efficiently. A poorly maintained engine will consume more fuel and produce more emissions, reducing its overall efficiency. Follow the manufacturer’s recommended maintenance schedule.