17 MPG combined. A figure that might dissuade buyers focused on efficiency. But the 2024 Porsche Cayenne S Coupe with its 4.0L V8 isn’t meant for that crowd. It’s built for enthusiasts who want a strong blend of performance and unmistakable style, enthusiasts who prioritize the thrill of a responsive engine and confident handling over saving gas. This isn’t a daily commuter; it’s a statement, a high-performance machine in a head-turning coupe shape.

City and highway performance

The Cayenne S Coupe’s EPA ratings are 15 MPG in the city and 21 MPG on the highway. The city number reflects stop-and-go traffic, where the V8’s eagerness can lead to drivers using the throttle a lot. The highway number, while still modest, better shows relaxed cruising, allowing the engine to settle into a more efficient rhythm. Even on the open road, drivers will want to use the engine’s power for passing, which will affect fuel consumption.

Annual fuel cost

The EPA estimates the 2024 Porsche Cayenne S Coupe will have an annual fuel cost of $3,400. This assumes 15,000 miles of driving per year, with fuel prices based on the national average. Individual driving habits and local fuel costs will change the final number. Aggressive driving, frequent short trips, and premium fuel prices can easily push that annual cost higher. Potential buyers need to accept this cost when considering the car’s performance.

Real-world expectations

It’s best to look past the EPA numbers. In the real world, expect slightly lower numbers than those published, especially if you live in a congested urban area or drive aggressively. Expect city driving to fluctuate between 12 and 15 MPG, and highway runs to yield around 19 to 22 MPG, depending on speed and driving style. While these aren’t numbers to brag about at the pump, they reflect the price you pay for the specific performance and driving feel of this Cayenne.

How it compares

Consider the competition. The BMW X6 M60i, another performance-oriented coupe SUV, gets a similar 17 MPG combined with its V8 engine. The Mercedes-AMG GLE 53 Coupe, using a boosted inline-6, gets a slightly better 20 MPG combined. The Range Rover Sport, with certain V8 configurations, lands around 16 MPG combined. While the Porsche’s numbers aren’t far from its peers, the comparison shows a key trade-off. Buyers drawn to the Cayenne S Coupe’s performance and design might accept using more fuel compared to less powerful alternatives. Compare CAYENNE MPG across all years to see how this model compares to others.

Tips to maximize efficiency

Smooth and steady driving saves fuel. Avoid aggressive acceleration and hard braking. Gentle inputs on the throttle will keep the engine operating efficiently, minimizing fuel consumption, especially in city driving. Use Porsche’s driving mode selector and choose “Normal” or “Eco” modes when possible. These settings will remap the throttle response and shift points to prioritize fuel efficiency.

Keep your tires properly inflated. Underinflated tires increase rolling resistance, forcing the engine to work harder and burn more fuel. Check your tire pressure regularly and inflate them to the recommended levels, as noted on the sticker inside the driver’s side door or in the owner’s manual.

Reduce unnecessary weight. Carrying extra cargo in the vehicle adds to its weight, which affects fuel economy. Remove any unnecessary items from the trunk or rear seats to lighten the load. Also, remove roof racks or cargo carriers when not in use, as they increase aerodynamic drag.

Plan your routes strategically. Avoid congested areas and peak traffic times when possible. Choosing routes with fewer stops and starts will help you maintain a more consistent speed, reducing fuel consumption. Use navigation apps to identify efficient routes and avoid traffic. Review all Porsche fuel economy data if you’re considering alternatives.