The 2021 Porsche Cayenne Coupe with its 3.0L six-cylinder engine achieves 20 MPG combined. While not exceptionally high, it’s an acceptable tradeoff for buyers who value style, performance, and the Porsche brand over maximizing efficiency. This vehicle prioritizes making a statement, providing a thrilling driving experience, and owning a unique piece of automotive design with a sloping roofline.

City and highway performance

The EPA estimates 19 MPG in the city and 23 MPG on the highway. These numbers reflect the Cayenne Coupe’s characteristics. In urban environments, the 335 horsepower engine delivers ample power for maneuvering through traffic, but frequent stops reduce fuel efficiency. On highways, the Cayenne Coupe achieves better efficiency thanks to its well-calibrated eight-speed automatic transmission and relatively aerodynamic design compared to standard SUVs. The highway figure shows that longer trips are possible without frequent fuel stops.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2021 Porsche Cayenne Coupe 3.0L at $2,900. This is based on 15,000 miles driven per year using the national average fuel price at the time of testing. Of course, your individual fuel costs will depend on your driving habits, local gasoline prices, and Sport mode usage, which will reduce fuel economy. Still, $2,900 provides a benchmark for comparing the Cayenne Coupe’s running costs to other vehicles in its class and all Porsche fuel economy data.

Real-world expectations

Although EPA figures offer a useful starting point, actual fuel economy can vary. Factors such as aggressive driving, short trips, and tire pressure affect your MPG. Owners who often push the Cayenne Coupe’s performance by accelerating and braking hard should expect fuel economy closer to, or even below, the city figure. In contrast, drivers who accelerate gently and emphasize smooth driving could see numbers closer to the highway rating. You can also explore CAYENNE MPG across all years.

How it compares

The Cayenne Coupe’s fuel economy is average for its class of performance SUVs. The BMW X6 xDrive40i, with its similar 3.0L turbocharged inline-six engine, gets approximately 21 MPG combined. The Mercedes-Benz GLE 450 Coupe, also with a turbocharged six-cylinder engine and mild hybrid system, achieves 20 MPG combined, matching the Cayenne Coupe. The Audi Q8, which shares a platform with the Cayenne, gets about 19 MPG combined in its base configuration. These numbers demonstrate that vehicles in this category prioritize performance, luxury, and design over fuel efficiency. Buyers considering these models likely expect to pay more, including for fuel.

Tips to maximize efficiency

Carefully select your Porsche drive mode. Sport and Sport Plus modes maximize the Cayenne Coupe’s performance capabilities, while significantly increasing fuel consumption. Choosing “Normal” or “Eco” mode for everyday commuting can improve efficiency without sacrificing too much performance. The Cayenne Coupe’s adaptive cruise control can also boost highway fuel economy by maintaining a consistent speed and distance.

Keep your tires properly inflated. Underinflated tires increase rolling resistance. Check tire pressure regularly and inflate them to the recommended level to improve fuel economy.

Anticipate traffic and avoid sudden acceleration or hard braking. Smooth driving maximizes fuel efficiency in any vehicle. Looking ahead and anticipating traffic changes minimizes unnecessary acceleration and braking, improving your MPG.

Reduce any unnecessary weight in the car. Removing extra items from the trunk and rear seats lightens the load and improves fuel economy, even if slightly. Every bit helps.