20 MPG combined won’t win any awards outside of Stuttgart, but it accurately reflects the Panamera 2.9L’s balancing act between performance and efficiency. Porsche buyers drawn to the Panamera, especially those opting for the V6, are prioritizing a visceral driving experience and unmistakable silhouette over significant fuel savings. They understand that some compromise comes with owning a high-performance luxury sedan, and fuel economy is often where that compromise lies.

City and highway performance

The EPA estimates the Panamera 2.9L will achieve 18 MPG in the city and 24 MPG on the highway. These numbers paint a picture of a vehicle that’s more sensitive to driving style and traffic conditions than your average sedan. Stop-and-go city driving will undoubtedly bring the MPG closer to the lower end, while consistent speeds on the open road allow the engine to operate more efficiently. The eight-speed automatic transmission (AM-S8) plays a key role here, providing smooth and rapid shifts to keep the engine in its optimal power band. Understanding this is critical for Panamera owners looking to manage their fuel consumption.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2023 Porsche Panamera 2.9L at $2,900. This figure is based on driving 15,000 miles per year, with 55% of those miles driven in the city and 45% on the highway. It also assumes national average fuel prices. This is just an estimate, and your actual fuel costs will vary depending on your driving habits, fuel prices in your area, and the specific type of gasoline you use. If you drive aggressively or live in an area with high fuel taxes, expect to exceed that $2,900 figure.

Conservative drivers in areas with lower fuel prices may come in under budget.

Real-world expectations

While the EPA provides a standardized testing method, real-world fuel economy can fluctuate significantly. Panamera owners should expect to see numbers that vary from the official estimates based on their individual driving styles and conditions. Short trips, frequent acceleration, and heavy traffic will all negatively impact fuel economy. On the other hand, longer highway cruises at consistent speeds can yield surprisingly good results, potentially even exceeding the 24 MPG highway rating. The car’s driving mode also plays a role; selecting “Normal” or “Eco” modes can help to optimize fuel efficiency, while “Sport” or “Sport Plus” prioritize performance at the expense of MPG.

How it compares

The Panamera 2.9L exists in a competitive segment where performance and luxury are often prioritized over efficiency, but buyers still want to see respectable numbers. The BMW 840i Gran Coupe, another sleek four-door coupe, achieves a slightly better 25 MPG combined. The Mercedes-AMG CLS 53, while packing more power, comes in around 23 MPG combined. Even within the Porsche family, potential buyers might cross-shop against the Cayenne SUV; the base Cayenne with its turbocharged V6 offers similar performance and a slightly lower 19 MPG combined rating. These comparisons are important because they highlight the relative efficiency of the Panamera within its peer group. Someone interested in all Porsche fuel economy data can see how the Panamera stacks up against other models from the brand.

Tips to maximize efficiency

Take advantage of the Panamera’s driving mode selector. The “Normal” or “Eco” modes optimize the powertrain for fuel efficiency by adjusting throttle response, shift points, and other parameters. While it might be tempting to leave it in “Sport” mode all the time, switching to a more economical mode during daily commutes or highway driving can make a noticeable difference.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, which forces the engine to work harder and consume more fuel. Check your tire pressure regularly and inflate them to the recommended levels specified on the doorjamb sticker. This is especially critical given that this car delivers power to the road with larger, performance oriented tires.

Anticipate traffic flow and avoid unnecessary braking and acceleration. Smooth and consistent driving minimizes fuel consumption. By looking ahead and anticipating changes in traffic, you can avoid sudden braking and acceleration, which waste fuel. Drive defensively and maintain a safe following distance.

Consider using cruise control on the highway. Cruise control helps maintain a consistent speed, which can improve fuel efficiency on long drives. However, avoid using cruise control in hilly terrain, as the system may overcompensate to maintain speed, negating any potential fuel savings. Don’t forget to check the PANAMERA MPG across all years to see how the models have changed over time.

Lighten the load. Excess weight in the vehicle reduces fuel economy. Remove any unnecessary items from the trunk or cargo area to reduce the overall weight of the car. While a few extra pounds might not seem like much, it can add up over time and impact fuel consumption.