22 MPG combined isn’t going to win any hypermiling awards, but for the 2021 Porsche Panamera 4S e-Hybrid Sport Turismo, it represents a balance. Buyers aren’t prioritizing ultimate fuel efficiency; they’re seeking a combination of Porsche performance, wagon practicality, and electrified propulsion. This is for the driver who wants to feel good about their ecological footprint without sacrificing the thrill of a twin-turbo V6 and the surefooted grip of all-wheel drive. Let’s be realistic: if fuel economy was the primary concern, they would be looking at a completely different class of vehicle. Instead, they’re accepting a trade-off, a compromise driven by a desire to have their cake and eat most of it too.

City and highway performance

The EPA estimates the Panamera 4S e-Hybrid ST achieves 21 MPG in the city and 23 MPG on the highway. These numbers reflect the characteristics of the vehicle and its intended use. City driving, with its stop-and-go traffic and reliance on electric power at lower speeds, is naturally less efficient for a car of this weight. The highway figure, while marginally better, reveals that the 2.9-liter twin-turbocharged V6 is still doing a significant amount of work, even with the hybrid system assisting at cruising speeds. The 8-speed automatic (AM-S8) is well-matched to the engine and hybrid motor, keeping the engine in its sweet spot, but physics ultimately prevails. This isn’t a lightweight econobox, it’s a performance wagon with a turbocharged engine with electric motor powertrain, and the MPG figures reflect that reality. For a complete picture, you can review PANAMERA MPG across all years.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2021 Porsche Panamera 4S e-Hybrid ST is $2,650. This figure is based on driving 15,000 miles per year and using the national average fuel prices for premium gasoline, which is required for optimal performance. Keep in mind that this is just an estimate, and your actual fuel costs may vary depending on your driving habits, the type of roads you typically drive on, and the prevailing fuel prices in your area.

Real-world expectations

While the EPA figures provide a standardized benchmark, real-world fuel economy for the Panamera 4S e-Hybrid ST can fluctuate considerably. Drivers who frequently use the electric-only mode for shorter commutes and prioritize regenerative braking will likely see MPG numbers exceeding the EPA estimates. Conversely, those who frequently engage in spirited driving or tackle long highway journeys without using the electric assist as much may find their fuel economy falling below the official figures. The key is finding the right balance between performance and efficiency, tailoring your driving style to maximize the benefits of the hybrid system without sacrificing the exhilarating experience this Porsche offers. The driving mode you select has a significant impact; using ‘Hybrid Auto’ mode will intelligently manage the interplay between the engine and electric motor for optimal efficiency, while ‘Sport’ and ‘Sport Plus’ modes will prioritize performance and diminish fuel economy accordingly.

How it compares

The Panamera 4S e-Hybrid ST exists in a niche market, making direct comparisons somewhat challenging. The BMW M550i xDrive, for example, offers similar performance and all-wheel drive but without the hybrid element, achieving a combined 20 MPG. The Mercedes-AMG E53 Wagon achieves a similar 22 MPG, putting it in the same ballpark but with a different character and driving experience. The Audi RS6 Avant, a direct competitor in terms of body style and performance, achieves a combined 17 MPG. While the pure MPG numbers are a factor, the Porsche buyer is also evaluating the intangible aspects of brand cachet, driving dynamics, and the hybrid powertrain within a high-performance wagon. If you want to see all Porsche fuel economy data, we have it available.

Tips to maximize efficiency

Use the electric-only mode whenever possible. For short trips around town, prioritize electric power to minimize fuel consumption. The Panamera 4S e-Hybrid ST has a usable all-electric range, and using it to the maximum will have a noticeable impact on overall fuel economy.

Master the art of regenerative braking. Anticipate traffic flow and lift off the accelerator early, allowing the regenerative braking system to capture energy and recharge the battery. This not only improves fuel economy but also extends the life of your brake pads.

Use the “Hybrid Auto” driving mode. This system automatically optimizes the interplay between the engine and electric motor for maximum efficiency, making it the ideal choice for everyday driving. Experiment with the different modes to understand how they affect fuel economy and performance.

Monitor your tire pressure regularly. Underinflated tires increase rolling resistance, which reduces fuel economy. Maintain the recommended tire pressure as indicated on the doorjamb sticker to ensure optimal efficiency and handling.

Reduce unnecessary weight. Carrying excessive cargo increases fuel consumption. Remove any unnecessary items from the vehicle to minimize weight and improve fuel efficiency.