20 MPG combined isn’t going to win any fuel efficiency awards, but consider the machine you’re driving: a long-wheelbase, all-wheel-drive Porsche Panamera. The 4S Executive isn’t about squeezing every last mile from a gallon. It’s about effortless cross-country travel, chauffeuring VIPs in quiet comfort, and unleashing a subtly ferocious twin-turbo V6 when the mood strikes. This specific Panamera configuration caters to customers who prioritize refined performance and luxurious appointments over outright frugality. Gas mileage is a consideration, certainly, but it’s further down the list than the cachet of the Porsche crest and the effortless power delivery.

City and highway performance

The EPA estimates for the 2016 Panamera 4S Executive place city driving at 17 MPG and highway cruising at 26 MPG. The city figure reflects the reality of stop-and-go traffic, where the reliable 3.0L twin-turbocharged engine uses more fuel. However, the highway number demonstrates the benefits of the seven-speed automatic transmission (AM-S7). At higher speeds, the Panamera settles into a more efficient rhythm, allowing for relaxed long-distance hauls. This spread is wider than many might expect from a modern engine, but it is indicative of the performance available and the mass that the engine is propelling. Understanding this difference is key to managing your fuel consumption.

Annual fuel cost

The EPA calculates the annual fuel cost for the 2016 Porsche Panamera 4S Executive to be $2,900. This figure is based on driving 15,000 miles per year and using national average fuel prices. It’s a helpful benchmark, but your actual costs will vary depending on your driving habits, the type of fuel you use (premium is recommended for optimal performance), and local fuel prices. It also assumes the car is used as a daily driver. Many owners of this type of vehicle primarily use it for longer trips or special occasions, which could lower the annual fuel expenditure.

Real-world expectations

Exceeding the EPA’s 26 MPG highway figure is achievable if you adopt a light-footed driving style and prioritize smooth acceleration. However, tapping into the twin-turbo V6’s potential, and that’s part of why you buy a Porsche, will inevitably lower your average fuel economy. In mixed driving, expect to see figures hovering in the high teens to low twenties. Aggressive acceleration, frequent changes in speed, and extended idling will all contribute to lower MPG. Conversely, using cruise control on long, flat stretches of highway can help maximize efficiency.

How it compares

Compared to its rivals, the 2016 Panamera 4S Executive’s fuel economy is within the expected range for its class. For instance, the BMW 750i xDrive, with its V8 engine and all-wheel drive, achieves roughly similar figures, at around 16 MPG city and 25 MPG highway. The Mercedes-Benz S550 4MATIC, a direct competitor, lands around 17MPG city and 26 MPG highway. Audi’s A8 L 3.0T Quattro manages around 19/29 respectively. Bear in mind that these competitors are typically cheaper. The slightly less powerful Panamera 4 with the same engine achieves around 21 MPG combined. For buyers considering the Panamera, fuel economy isn’t usually the deciding factor; performance, brand prestige, and the unique Porsche driving experience often outweigh marginal differences in MPG. Explore PANAMERA MPG across all years to see trends.

Tips to maximize efficiency

Use the Panamera’s drive mode selector carefully. Selecting “Normal” mode softens throttle response and optimizes the transmission for fuel efficiency. “Sport” and “Sport Plus” modes, while exhilarating, significantly increase fuel consumption.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressure regularly and inflate them to the recommended level listed on the doorjamb sticker.

Avoid unnecessary idling. If you’re stopped for more than a minute or two, turn off the engine. Modern engines are designed to restart quickly and efficiently, and prolonged idling wastes fuel. and resist the urge to accelerate away the line. A smooth start not only burns less fuel, but also increases safety.

Minimize aerodynamic drag. Remove roof racks or cargo carriers when they are not in use, as they can significantly decrease fuel economy, especially at highway speeds. Close all your windows when traveling at freeway velocity. Aerodynamics are increasingly important at higher speeds, and the big, tall body of the Panamera can cost drivers a lot of fuel at 75 MPH with the windows open. Keep tabs on all Porsche fuel economy data to see how technology improvements change MPG over time.