The 2020 Porsche Panamera Turbo Sport Turismo with its 4.0L twin-turbo V8 gets 20 MPG combined. Nobody shelling out six figures for a high-performance wagon expects Prius-level efficiency. This isn’t about pinching pennies; it’s about understanding what you pay for a vehicle that blends supercar-rivaling acceleration with the practicality of a hatchback.

City and highway performance

The EPA estimates 18 MPG in the city and 23 MPG on the highway for the Panamera Turbo ST. The relatively low city figure reflects stop-and-go driving, where the engine is constantly accelerating from a standstill. The turbochargers spool up, demanding more fuel and negating any potential for coasting efficiency. The highway number, while still not stellar, benefits from consistent speeds and the eight-speed automatic transmission finding its optimal gear. Expect a dip from these figures during spirited runs, which is probably a regular occurrence for most owners.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2020 Porsche Panamera Turbo ST 4.0L 8-cyl at $2,900. This figure is based on driving 15,000 miles per year and using national average fuel prices. This is important to understand, because your actual fuel cost will vary depending on how much you drive, how aggressively you drive, where you live (and the local fuel prices), and even the time of year due to seasonal fuel blends. However, the $2,900 figure provides a baseline for comparison.

Real-world expectations

While the EPA provides a standardized yardstick, real-world MPG often differs. Aggressive driving, short trips where the engine never fully warms up, and using the Turbo ST’s performance capabilities will all significantly impact fuel consumption. Owners report achieving the EPA’s 23 MPG highway figure requires conscious effort and restraint. Heavy traffic and constant acceleration will likely bring the combined MPG closer to the mid-teens.

How it compares

Compared to other high-performance luxury vehicles, the Panamera Turbo ST’s fuel economy is pretty much what you’d expect. A comparable BMW M5 with its 4.4L V8 also lands around 17 MPG city and 25 MPG highway. The Mercedes-AMG E63 S Wagon, another direct competitor, scores similarly, with an combined rating of around 19 MPG. These vehicles are bought for their power and driving dynamics; fuel economy is a secondary consideration. You can compare PANAMERA MPG across all years. However, if fuel economy is a high priority, the Panamera 4 E-Hybrid, while offering less outright power, presents a more efficient alternative within the Panamera range. Even the Cayenne Turbo S E-Hybrid offers comparable, if not slightly better, MPG figures while offering SUV practicality at the expense of sharper handling.

Tips to maximize efficiency

Given the Panamera Turbo ST’s performance-oriented nature, getting the best fuel economy requires a careful approach. Avoiding aggressive acceleration and braking is important. Treat the throttle gently, especially in city driving, and anticipate traffic flow to minimize unnecessary stops. Resist the urge to constantly test the engine’s limits; smooth, steady driving will yield noticeable improvements.

Check your tire pressures regularly. Underinflated tires increase rolling resistance, forcing the engine to work harder and burn more fuel. Consult the sticker on the driver’s side doorjamb for the recommended tire pressure for your specific Panamera Turbo ST. Maintaining proper inflation not only improves fuel economy but also enhances handling and tire life.

Use the Porsche’s driving modes carefully. While “Sport” and “Sport Plus” modes unlock the engine’s full potential, they also compromise fuel efficiency. When cruising on the highway or navigating city streets, select “Normal” or “Eco” driving modes to prioritize saving gas. Air suspension settings can make a difference, as well. Lowering the car at higher speeds can improve aerodynamics.

Limit accessory use when possible. Air conditioning, especially at full blast, places a significant load on the engine. Using heated seats, headlights, and other electrical accessories also drains power and reduces fuel economy. While comfort is important, use these features sparingly to minimize their impact on MPG. Be aware of how roof racks, cargo carriers, and other external modifications negatively impact fuel consumption.

Keep up with scheduled maintenance. A properly maintained engine runs more efficiently. Ensure that your Panamera Turbo ST receives regular oil changes, air filter replacements, and spark plug inspections according to Porsche’s recommended service intervals. Neglecting maintenance can lead to decreased performance and increased fuel consumption. For a wider view, see all Porsche fuel economy data.