While 21 MPG combined probably won’t be the top reason people buy the 2019 Porsche Cayenne with the 3.0L six-cylinder engine, for drivers who value Porsche handling, luxury, and prestige in a mid-size SUV, this fuel economy is a reasonable trade-off. This Cayenne isn’t competing against a Prius; its buyers are generally affluent and want a practical SUV without giving up driving enjoyment or brand recognition.

City and highway performance

The EPA estimates for the 2019 Cayenne 3.0L show the expected difference between city and highway mileage. You can expect 19 MPG in urban driving, which usually involves stop-and-go traffic and slower speeds. On the open road, the highway mileage increases to 23 MPG. This isn’t a huge jump because the Cayenne’s eight-speed automatic transmission and relatively light weight (for its class) help maintain efficiency even at higher speeds. The engine’s broad torque curve also helps, as it reduces the need to downshift and waste fuel on highway hills.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2019 Porsche Cayenne 3.0L at $2,750. This is calculated based on 15,000 miles driven each year, with 55% city and 45% highway driving, using national average fuel prices when the calculation was made. Keep in mind that this is just an estimate, your actual fuel costs will change depending on how you drive, the fuel prices where you live, and how many miles you drive per year.

Real-world expectations

EPA estimates provide a standard for comparison, but real-world mileage can vary. Cayenne drivers who accelerate quickly or frequently use Sport mode might see fuel economy closer to the lower end of the EPA range, or even a bit lower. On the other hand, drivers who mainly commute on the highway and accelerate smoothly might see better results than the 23 MPG highway rating. Other things like outside temperature, tire pressure, and cargo weight also affect fuel economy. Towing a trailer will significantly decrease fuel economy. Visit us to see CAYENNE MPG across all years.

How it compares

The Cayenne’s fuel economy is typical for its class. A BMW X5 xDrive40i with a similar turbocharged inline-six gets about 22 MPG combined. The Mercedes-Benz GLE 450 4MATIC, also with a boosted inline-six, is in the same area, at 21 MPG combined. Buyers who prioritize less gas above all else might consider the Lexus RX 450h, a hybrid that gets a much higher 30 MPG combined. However, the RX 450h isn’t as fun to drive and doesn’t perform as well, which is a trade-off most Cayenne buyers won’t want to make. For Porsche owners seeking more efficiency, review all Porsche fuel economy data.

Tips to maximize efficiency

Keeping your tires properly inflated is important for the best fuel economy. Check that your Cayenne’s tires are inflated to the pressure listed on the doorjamb sticker. Underinflated tires increase rolling resistance, which makes the engine work harder and use more fuel.

Avoid driving aggressively. Fast acceleration, hard braking, and high-speed driving all reduce fuel economy. Drive smoothly and anticipate traffic to avoid unnecessary braking and acceleration.

Choose the Cayenne’s driving modes carefully. Sport and Sport Plus modes improve performance, but they also reduce fuel efficiency. Choose Comfort or Eco mode for daily driving and highway trips to save fuel.

Reduce extra weight. Carrying extra cargo in the Cayenne increases the vehicle’s weight, which hurts fuel economy. Take out anything you don’t need, especially heavy things like golf clubs or sports gear.

Regular maintenance is important for good fuel economy. Have your Cayenne’s oil changed regularly, replace the air filter, and check the spark plugs as recommended by Porsche. A well-maintained engine runs more efficiently and saves you fuel.