20 MPG combined won’t win any hypermiling awards, but it’s a figure most 2021 Porsche Panamera 4S owners accept as the cost. The reason is that they are transporting themselves and perhaps a few lucky passengers in a supremely comfortable, ludicrously quick, and undeniably stylish four-door hatchback. This isn’t transportation for the purely practical; it’s a statement, and that statement comes with a predictable fuel bill.

City and highway performance

The EPA estimates the 2021 Porsche Panamera 4S, equipped with its smooth 2.9L twin-turbo V6 and expertly tuned eight-speed automatic transmission, achieves 18 MPG in the city and 24 MPG on the highway. These figures depend on several factors. The engine, while potent, benefits from direct injection and optimized combustion, but it still needs fuel to generate 443 horsepower. The eight-speed automatic helps keep the engine in its most efficient operating range during steady-state cruising, aiding highway efficiency.

However, the temptations of the Panamera 4S are strong. Its ability to surge forward with minimal effort makes fuel-sipping driving a conscious effort. The city figure reflects this; spirited acceleration in urban environments takes its toll.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2021 Porsche Panamera 4S is $2,900. This figure is based on driving 15,000 miles per year, with 45% of those miles driven in the city and 55% on the highway, using national average fuel prices.

This is a useful benchmark, but it’s important to acknowledge its limitations. Your personal fuel costs will vary considerably depending on your driving habits, the type of fuel you use (premium is recommended for optimal performance), and the fuel prices in your area. Someone exclusively driving aggressively in stop-and-go city traffic will far exceed that $2,900 estimate, while a driver who primarily uses the Panamera 4S for longer highway commutes, and practices efficient driving techniques, may find themselves spending less.

Real-world expectations

While the EPA provides a consistent testing methodology, real-world fuel economy often differs. Panamera 4S owners report figures that fluctuate around the EPA estimates, but with some consistent downward pressure. Expect to see 16–20 MPG in mixed driving if you enjoy the car’s performance capabilities; hitting the EPA combined rating takes discipline. Longer highway trips can yield close to the 24 MPG rating, or even slightly better, if driven with a light foot.

However, frequent use of Sport or Sport Plus mode, which noticeably sharpen throttle response and alter shift patterns, will inevitably decrease fuel economy. Remember, the Panamera 4S is a performance car first and foremost, and driving habits will be the dominant factor in determining your fuel costs.

How it compares

The Panamera 4S inhabits a competitive segment, though direct rivals are few. The Mercedes-AMG GT 4-Door Coupe is a close competitor, and the GT53 model with its inline-six engine achieves a comparable 19 MPG combined. The BMW M8 Gran Coupe is in the same performance ballpark, but its larger V8 results in a lower 17 MPG combined. Audi’s RS7, another high-performance hatchback, also manages 17 MPG combined. This comparison highlights a truth: this level of performance rarely coincides with impressive fuel economy.

Buyers considering a Panamera 4S generally prioritize performance and driving experience over overall fuel efficiency, but context matters. Someone might still be interested in viewing all Porsche fuel economy data to compare across the lineup. Even with the compromises, it’s also important to view PANAMERA MPG across all years for additional data about models from other generations.

Tips to maximize efficiency

The simplest way to improve fuel economy in your Panamera 4S is to adopt smoother driving habits. Avoid aggressive acceleration and braking, as these actions rapidly deplete fuel. Anticipate traffic flow and maintain a steady speed whenever possible. The Panamera 4S’s well-weighted steering and poised chassis make smooth progress engaging and rewarding.

Use the Panamera’s drive mode selector to your advantage. Selecting Normal mode will prioritize fuel efficiency by optimizing throttle response and shift points. Sport and Sport Plus modes unlock the car’s full performance potential, but they also significantly increase fuel consumption. Reserve these modes for occasions when you specifically want to enjoy the car’s performance capabilities.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, which reduces fuel efficiency. Check your tire pressures regularly and inflate them to the recommended levels, which can be found on a sticker inside the driver’s side doorjamb. This simple act can make a noticeable difference over time.

Minimize unnecessary weight. Carrying excessive weight in your trunk or backseat puts additional strain on the engine, decreasing fuel economy. Remove any items that are not essential for your daily driving. A few extra pounds may not seem significant, but they can add up over time. It’s also essential to stick diligently to Porsche’s maintenance schedule and replace spark plugs, air filters, and other wear items when required.

Finally, consider shorter trips in a different vehicle. The Panamera 4S excels on longer journeys and provides enormous enjoyment on spirited drives. However, using it for endless short trips will result in a high cost-per-mile figure. Walking, cycling for short trips, or using a fuel-efficient car you may already own will reduce the annual fuel consumption of your Panamera.