17 MPG combined is the price of admission to the very exclusive club that is the 2023 Porsche Cayenne Turbo Coupe. No one choosing this fire-breathing, dramatically styled SUV is prioritizing fuel efficiency; they’re seeking neck-snapping acceleration, a sonorous V8 soundtrack, and head-turning presence. This vehicle is about making a statement, and the fuel bill is simply part of the cost.

City and highway performance

The EPA estimates that the 2023 Porsche Cayenne Turbo Coupe will achieve 15 MPG in the city and 20 MPG on the highway. These figures reflect a vehicle designed for exhilarating performance rather than maximizing fuel sipping. The 4.0-liter twin-turbo V8 generates prodigious power, and even with the smooth-shifting 8-speed automatic, exploiting that power is the default driving mode for many owners. The city figure reflects the stop-and-go reality where the Cayenne’s weight and powerful engine demand more fuel. The highway number improves thanks to more consistent speeds and reduced acceleration demands, but still trails less performance-oriented SUVs.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2023 Porsche Cayenne Turbo Coupe at $3,400. This figure is based on driving 15,000 miles per year, with 55% of those miles driven in the city and 45% on the highway. The calculation also uses the national average fuel price, which fluctuates, and assumes that drivers will be filling up with premium fuel, as required by the Turbo Coupe. This $3,400 expense is a significant line item for any vehicle, but for Cayenne Turbo Coupe owners, it’s likely a smaller percentage of their overall vehicle budget, which includes a hefty purchase price, insurance, and maintenance.

Real-world expectations

While the EPA figures offer a baseline, real-world fuel economy for the Cayenne Turbo Coupe will likely vary. Aggressive driving, frequent short trips, and extended idling will all negatively impact fuel consumption. Conversely, careful use of the throttle and prioritizing highway miles might yield slightly better results than the EPA estimates. Expect to see numbers within a 1-2 MPG range of the official figures, but don’t be surprised if your average dips lower if you frequently indulge in the powertrain’s capabilities. Checking CAYENNE MPG across all years, note that some owners even see single-digit numbers from previous model years with similar driving conditions.

How it compares

Compared to its high-performance SUV competitors, the Cayenne Turbo Coupe’s fuel economy is roughly in line with expectations. The BMW X6 M, another coupe-styled SUV with a powerful engine, achieves a very similar 17 MPG combined. The Mercedes-AMG GLE 63 S Coupe also lands in the same ballpark. A more direct competitor, the Lamborghini Urus, manages only 14 MPG combined, making the Cayenne look almost frugal by comparison. These comparisons matter not because buyers are cross-shopping for ultimate efficiency, but to understand the trade-offs within this specific niche. Those seeking better fuel economy within the Porsche family can explore other trims of the Cayenne or view all Porsche fuel economy data.

Tips to maximize efficiency

While efficiency may not be the primary goal, there are still ways to optimize fuel consumption in your Cayenne Turbo Coupe. Smooth acceleration and avoiding hard braking can significantly reduce fuel waste. The twin-turbo V8 is responsive even with moderate throttle input, so resist the urge to floor it at every opportunity.

Take advantage of the Cayenne’s various driving modes. Selecting “Normal” mode will remap the throttle and shift points for improved efficiency. While “Sport” and “Sport Plus” modes unleash the engine’s full potential, they also come at the expense of fuel economy.

Ensure your tires are properly inflated. Under-inflated tires increase rolling resistance, which reduces fuel efficiency. Check your tire pressure regularly and maintain the recommended levels specified in the owner’s manual or on the door jamb.

Minimize unnecessary weight. Remove any cargo from the vehicle that isn’t essential, as extra weight puts added strain on the engine. A lighter vehicle requires less energy to accelerate, resulting in improved fuel economy.