17 MPG combined is the fuel economy for the 2021 Porsche Cayenne GTS with its 4.0L V8. Few buyers of this Cayenne consider fuel economy. They prioritize the thrill of a naturally aspirated, high-revving engine, the razor-sharp handling, and the presence that only a GTS can deliver. This isn’t the Cayenne for those seeking less gas; it’s for the enthusiast who wants the most engaging driving experience possible in a practical, five-passenger SUV.

City and highway performance

The EPA estimates for the Cayenne GTS reflect its performance tuning. The city figure of 15 MPG is telling. Stop-and-go traffic and aggressive acceleration, common scenarios for this vehicle, impact fuel consumption. On the highway, the 19 MPG rating is more palatable, but still not thrifty. This difference highlights the V8’s sensitivity to driving style. A light foot during steady cruising will yield closer to the EPA estimate, but the temptation to exploit the engine’s power is always there.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2021 Porsche Cayenne GTS is $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, using national average fuel prices. This is just an estimate. Your actual fuel costs will vary depending on your driving habits, the price of gasoline in your area, and how often you unleash all 453 horsepower. For anyone considering a GTS, the thought of premium unleaded bills probably elicits a shrug.

Real-world expectations

While the EPA estimates provide a baseline, real-world fuel economy for the Cayenne GTS often falls short. Enthusiastic drivers who frequently accelerate rapidly can expect to see figures closer to 13-15 MPG in mixed driving. Even restrained drivers will likely struggle to consistently achieve the EPA combined rating. The vehicle’s weight, combined with the thirst of a high-performance V8, makes it difficult to achieve optimal fuel efficiency.

The “Sport” and “Sport Plus” driving modes, which sharpen throttle response and hold gears longer, offer driving pleasure but decrease your range between fillups.

How it compares

Compared to its competitors, the Cayenne GTS occupies a specific niche. The BMW X5 M50i, with its turbocharged V8, manages a slightly better 18 MPG combined. The Mercedes-AMG GLE 53, with its inline-six cylinder engine and mild hybrid system, achieves 20 MPG combined. The Range Rover Sport with the supercharged V6 comes in around the same, at 18 MPG combined. These differences illustrate the trade-off between performance and efficiency. Those prioritizing raw power and naturally aspirated responsiveness might be willing to sacrifice a few MPGs for the GTS’s unique character. Compare CAYENNE MPG across all years.

Tips to maximize efficiency

Resist the urge to constantly exploit the engine’s power. Short bursts of acceleration are tempting, but consistent restraint improves fuel economy. The GTS is tuned from the factory for enthusiastic driving, so smooth acceleration will maximize its range.

Use the “Normal” driving mode for everyday commuting. While “Sport” and “Sport Plus” modes enhance throttle response and shift points, the “Normal” mode prioritizes fuel efficiency by optimizing gear selection and reducing engine revs. Pick the mode that matches your immediate needs.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Check your tire pressure and inflate them to the manufacturer’s recommended levels for efficiency.

Minimize unnecessary weight. Carrying extra cargo adds to the vehicle’s mass, which impacts fuel economy. Remove any items from the vehicle that are not essential for daily use. Even small weight reductions can have a cumulative effect.

Anticipate traffic flow and avoid hard braking. Aggressive braking wastes energy and requires more fuel to regain speed. By anticipating traffic conditions and maintaining a consistent speed, you can reduce the need for frequent braking and acceleration, improving fuel efficiency. Check out all Porsche fuel economy data and models.