The 2017 Porsche Cayenne S with its 3.6L V6 gets 20 MPG combined. It won’t win any awards for thriftiness, but it accurately reflects the compromise buyers knowingly make. These owners prioritize performance, driving dynamics, and the cachet of the Porsche crest above all else. Fuel efficiency is a secondary concern, perhaps even a tertiary one, as they haul kids and groceries with the enthusiasm of a sports car driver.

City and highway performance

The Cayenne S manages 17 MPG in the city and 24 MPG on the highway, according to EPA estimates. The S8 automatic transmission plays a significant role here, offering smooth shifts and optimized gear ratios that aim to balance responsiveness with fuel consumption. The car’s weight and standard all-wheel drive system inevitably impact city mileage, while the highway figure is more palatable, proving that cruising at a steady speed can mitigate some of the thirsty V6’s demands. Remember that driving style will be a huge factor, and those exploiting the Cayenne’s considerable performance reserves will see figures fall even lower.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2017 Porsche Cayenne S at $2,900. This figure is based on driving 15,000 miles per year and using the national average fuel price for premium unleaded gasoline. The calculation provides a standardized benchmark, but individual spending may vary widely based on local fuel prices, driving habits, and the ratio of city to highway miles driven. Consider it a baseline, a necessary expense for the privilege of driving a performance SUV.

Real-world expectations

While the EPA figures provide a reference point, real-world MPG can differ significantly. Aggressive driving, stop-and-go traffic, and even weather conditions can affect fuel economy. Cayenne S owners often report figures slightly below the EPA estimates, especially in urban environments. Those who prioritize smooth acceleration and use cruise control on the highway are the likeliest to achieve numbers closer to the official ratings. Your mileage will vary, but understanding the Cayenne’s driving characteristics is key to managing fuel consumption.

How it compares

The 20 MPG combined figure places the Cayenne S in the middle of the competitive luxury SUV segment. The BMW X5 xDrive35i, with its turbocharged inline-six, achieves a similar 20 MPG combined. The supercharged V6-powered Audi Q7 is rated slightly higher at 21 MPG combined. Moving up to rivals like the Range Rover Sport with its supercharged V6 will often see the fuel economy drop to around 19 MPG combined. Comparing to other CAYENNE MPG across all years, this generation strikes a reasonable balance, but the comparison is important. It highlights the trade-offs buyers consider when choosing between performance, luxury, and efficiency.

Tips to maximize efficiency

The Cayenne S rewards a smooth driving style. Avoid hard acceleration and braking whenever possible. Anticipate traffic flow and maintain a consistent speed to minimize fuel consumption. The Cayenne isn’t really designed for hypermiling, but a conscious effort to drive smoothly will make a difference.

Properly inflate your tires to the recommended pressure. Underinflated tires increase rolling resistance, which negatively impacts fuel economy. Check your tire pressure regularly, especially during colder months, as temperatures can affect tire pressure.

Reduce unnecessary weight in the vehicle. Excess cargo adds strain on the engine, reducing fuel efficiency. Remove items from the trunk and rear seats that are not essential for your daily driving.

Consider your route. Opt for routes that minimize stop-and-go traffic. Highway driving is generally more fuel-efficient than navigating congested city streets. Use navigation apps to identify and avoid traffic bottlenecks, saving you time and fuel.

Keep up with routine maintenance. A well-maintained engine operates more efficiently. Schedule regular oil changes, air filter replacements, and spark plug inspections to ensure optimal performance. Refer to your owner’s manual for recommended maintenance intervals.