17 MPG combined, that’s the EPA’s rating for the 2022 Porsche Cayenne GTS, which has a naturally aspirated 4.0-liter V8 engine. Of course, no one spending six figures on a high-performance SUV expects Prius-like efficiency. This isn’t about hypermiling; it’s about a visceral connection to a powerful engine. The Cayenne GTS buyer wants the rumble, responsiveness, and outright performance that only a V8 can deliver, and they’re willing to pay the price at the pump.

City and highway performance

The EPA further breaks down the Cayenne GTS’s fuel economy numbers, assigning it 15 MPG in the city and 19 MPG on the highway. These figures reflect stop-and-go traffic versus sustained cruising speeds. The city number takes a hit because of the frequent acceleration needed, while the highway figure benefits from the engine operating more efficiently. The Cayenne GTS isn’t just a stylish SUV; it also has impressive acceleration, which affects fuel efficiency. Expect the 15 MPG city figure to drop even further with aggressive driving.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2022 Porsche Cayenne GTS at $3,400. This is based on driving 15,000 miles per year, with 55% of those miles driven in the city and 45% on the highway, using national average fuel prices. It’s a substantial figure, and potential buyers should factor this into their overall ownership costs. However, those drawn to the GTS’s performance and prestige often see this cost as an acceptable price for the unique driving experience it provides. You can view all Porsche fuel economy data on our site to see where the GTS fits in with the rest of the lineup.

Real-world expectations

EPA estimates are a useful starting point, but real-world fuel economy can change significantly based on driving style, traffic, and weather. Aggressive acceleration, frequent hard braking, and prolonged idling will all negatively affect fuel consumption. Conversely, a smoother driving style and anticipating traffic flow can help improve mileage. Elevation changes also play a role, impacting fuel economy. Cayenne GTS drivers have to accept these considerations, and the V8 engine does not have a light touch in the city.

How it compares

The Cayenne GTS occupies a specific niche in the performance SUV segment. The BMW X5 M50i, with its turbocharged V8, achieves a slightly better 18 MPG combined. The Mercedes-AMG GLE 53, with a turbocharged inline-6 coupled with a mild-hybrid system, gets 20 MPG combined. These comparisons matter to the prospective Cayenne GTS buyer. While they may prioritize performance and driving feel over fuel economy, understanding how the GTS compares to its rivals provides a more informative view of its ownership costs. For more, you can also check CAYENNE MPG across all years.

Tips to maximize efficiency

While the Cayenne GTS isn’t made primarily for fuel efficiency, drivers can still take steps to minimize fuel consumption without sacrificing too much of the driving experience. Avoid aggressive acceleration and hard braking, as these habits consume significant amounts of fuel. Smooth, predictable driving is key to getting the best mileage, even in a performance-oriented vehicle.

Make sure your tires are properly inflated. Underinflated tires increase rolling resistance, which can negatively impact fuel economy. Check your tire pressure regularly and maintain it at the recommended levels, found on a sticker inside the driver’s side doorjamb. A simple check can help.

Remove unnecessary weight from the vehicle. Get rid of any items from the trunk or cargo area that aren’t essential, because extra weight increases fuel consumption. While the impact may seem small, it helps. Think of it as trading trunk space for more miles per tank.

Use the Cayenne’s driving modes. The “Normal” mode is typically the most fuel-efficient setting for everyday driving. Save the “Sport” or “Sport Plus” modes for when you want to enjoy the engine’s full performance. Sticking to “Normal” most of the time can save fuel.

Minimize idling. Avoid letting the engine idle for long periods, especially when waiting in traffic. If you expect to be stopped for more than a minute or two, turn off the engine. Modern vehicles restart quickly and efficiently, so avoiding idling can save fuel.