2018 Porsche Panamera Turbo ST: Fuel Economy Deep Dive

20 MPG combined is the EPA’s sticker figure for the 2018 Porsche Panamera Turbo Sport Turismo, or ST as Porsche aficionados call it. While it’s hardly Prius territory, understanding that number requires acknowledging what this car is. We’re talking about a 550-horsepower, twin-turbocharged V8-powered wagon that can haul a family and their luggage at speeds that would make supercars blush. Fuel efficiency is a consideration, yes, but it’s lower on the priority list than performance and practicality for the buyer spending six figures on this autobahn missile.

City and highway performance

The EPA breaks down the Panamera Turbo ST’s fuel economy further, revealing an estimated 18 MPG in the city and 23 MPG on the highway. The city figure, achieved through stop-and-go traffic and lower average speeds, highlights how a large-displacement engine consumes fuel. The highway number is more palatable, suggesting that covering long distances at a steady cruise can yield reasonably efficient results. However, even that 23 MPG figure is somewhat aspirational; the temptation to tap into that prodigious power reserve is ever-present, impacting real-world mileage. This is a car that begs to be driven with enthusiasm, and doing so will inevitably penalize your fuel consumption.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2018 Porsche Panamera Turbo ST at $2,900. This figure is calculated based on driving 15,000 miles per year, using the national average fuel price. Considering the Panamera Turbo ST requires premium fuel, that annual expense can easily increase above the EPA estimate depending on individual driving habits and fluctuations in fuel costs. But let’s be honest: Someone spending $150,000+ on a high-performance wagon likely isn’t going to lose sleep over a few extra hundred dollars at the pump each year. While not truly economical, it puts the cost in perspective for those considering whether to buy this vehicle.

Real-world expectations

While the EPA provides a standardized benchmark, real-world fuel economy can vary considerably. Aggressive driving will plummet MPG figures, while a more restrained approach, emphasizing smooth acceleration and anticipation of traffic flow, can yield results closer to the EPA’s estimates. Remember that the Panamera Turbo ST packs a substantial curb weight, and that demands more fuel to get moving. Frequent use of the car’s Sport or Sport Plus modes, which optimize engine and transmission settings for maximum performance, will hurt any attempts at fuel conservation. Look into PANAMERA MPG across all years for a broader perspective on fuel consumption.

How it compares

Compared to its direct competitors, the Panamera Turbo ST’s fuel economy lands roughly in the same ballpark. The Mercedes-AMG E63 S Wagon, another high-performance hauler, achieves a similar 16 MPG city and 22 MPG highway. The Audi RS6 Avant, a more recent entrant into the performance wagon segment, offers slightly better numbers, typically landing around 15 MPG city and 25 MPG highway. These differences, however minimal, are likely overshadowed by other considerations like styling, brand loyalty, and perceived performance. Buyers in this segment are less focused on absolute fuel efficiency and more concerned with finding a car that delivers blistering performance alongside practicality. You can explore all Porsche fuel economy data for a wider comparison across the Porsche range.

Tips to maximize efficiency

Use the automatic start/stop system. The Panamera Turbo ST is equipped with this feature, which shuts off the engine at complete stops to conserve fuel. While some drivers find it intrusive, it can contribute to noticeable fuel savings in city driving, especially during prolonged idling at traffic lights.

Drive smoothly and anticipate traffic conditions. Aggressive acceleration and braking are fuel-economy killers. Develop a driving style that emphasizes smooth inputs and maintaining a consistent speed. Scan the road ahead and anticipate changes in traffic flow to minimize unnecessary acceleration and deceleration.

Stick to the standard driving mode when possible. While the Sport and Sport Plus modes unlock the Panamera’s full performance potential, they also significantly increase fuel consumption. When not actively seeking maximum thrills, use the standard driving mode for a balanced driving experience and improved fuel efficiency.

Ensure proper tire inflation. Underinflated tires increase rolling resistance, which reduces fuel economy. Regularly check and maintain the correct tire pressure as specified in the owner’s manual. Not only will this improve fuel efficiency, but it will also improve handling and extend tire life.

Consider your route. If possible, choose routes that minimize stop-and-go traffic and prolonged idling. Highway driving generally yields better fuel economy than city driving, so opting for a longer highway route might actually save you fuel, depending on traffic conditions.