23 MPG combined is a justifiable figure for the 2018 Porsche Panamera 4S. This isn’t a Prius; it’s a performance-oriented luxury sedan capable of startling acceleration and surprisingly deft handling. Owners who select this Panamera know exactly what they’re signing up for, blistering speed blended with premium materials and a badge that announces their arrival. Fuel efficiency, while appreciated, isn’t their primary concern.

City and highway performance

The EPA estimates reveal a split of 21 MPG in the city and 28 MPG on the highway. The city figure reflects the realities of urban driving, where the Panamera’s potent 2.9L twin-turbo V6 is constantly being called upon for bursts of acceleration. The highway number, however, paints a more optimistic picture. Cruising at consistent speeds, the Panamera’s eight-speed automatic transmission allows the engine to settle into a more efficient rhythm. The difference highlights how driving style influences fuel consumption; a heavier foot will undoubtedly decrease those numbers, while a gentler approach can bring you closer to the EPA estimates.

Annual fuel cost

The EPA calculates the annual fuel cost for the 2018 Porsche Panamera 4S at $2,500. This figure is based on driving 15,000 miles per year, assuming a national average fuel price. It’s a useful benchmark, but individual experiences will vary based on local fuel costs and driving habits. For Panamera owners, the $2,500 is just one line item in the bigger picture of ownership, overshadowed by the satisfaction of driving such a capable and luxurious machine.

Real-world expectations

While the EPA provides a standardized estimate, real-world fuel economy is subject to various factors. Driving aggressively, frequently using Sport or Sport Plus modes, and navigating congested city streets will all contribute to lower MPG figures. Conversely, longer highway journeys at steady speeds can often yield results closer to or even slightly exceeding the EPA’s 28 MPG highway estimate. Tire pressures, ambient temperature, and even the grade of fuel used can also play a role. Owners should monitor their fuel consumption over time to develop a realistic understanding of what their Panamera 4S actually delivers under their specific driving conditions.

How it compares

Compared to its peers, the Panamera 4S’s fuel economy is competitive but not class-leading. The Mercedes-AMG CLS 53, with its mild-hybrid system, manages around 21 MPG combined. The BMW M550i xDrive, while boasting similar performance, achieves approximately 20 MPG combined. The Audi S7, another performance-oriented hatchback, posts figures around 22 MPG combined. These differences, while seemingly small, can add up over time. However, for buyers in this segment, the balance between performance, luxury, and fuel economy is a carefully considered trade-off, and the Panamera 4S often wins out based on its overall driving experience and brand cachet. You can dig into PANAMERA MPG across all years to see how various model years stack up.

Tips to maximize efficiency

Take advantage of the Panamera’s driving modes. Selecting “Normal” mode will optimize the engine and transmission for fuel efficiency, softening throttle response and shifting earlier. While it’s tempting to always use “Sport” or “Sport Plus,” reserving them for truly spirited drives will significantly improve your overall fuel economy.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Check your tire pressures regularly and inflate them to the recommended levels, found on a sticker inside the driver’s side door jamb. This small adjustment can lead to noticeable improvements.

Minimize idling. Modern cars are surprisingly efficient when turned off. If you’re stopped for more than a minute or two, switch off the engine. Prolonged idling wastes fuel and contributes to unnecessary emissions. Using the auto start/stop system (if equipped) can help with this.

Practice smooth driving techniques. Avoid harsh acceleration and braking, which waste fuel. Anticipate traffic flow and maintain a steady speed whenever possible. Smooth, gradual inputs not only improve fuel economy but also enhance the overall driving experience.

Lighten the load. Remove unnecessary items from the trunk, as extra weight increases fuel consumption. While this might seem marginal, every little bit helps, and a lighter car is also a more responsive and enjoyable car to drive. You can compare it against all Porsche fuel economy data to see the broader brand picture.