21 MPG combined isn’t going to win any awards for efficiency, but it’s also not the primary concern for those drawn to the 2015 Porsche Panamera 4 with its 3.6L V6. This isn’t a Prius competitor; it’s a Porsche designed for four adults to travel in comfort and style, while still delivering driving excitement. The Panamera buyer seeks a blend of performance and practicality largely unmatched in the marketplace, and understands that some compromises are necessary.

City and highway performance

The EPA estimates for the 2015 Panamera 4 3.6L are 18 MPG in the city and 27 MPG on the highway. That spread reflects the nature of the car. Stop-and-go driving in an all-wheel-drive car with a 310-horsepower engine is less efficient than cruising at a steady speed on the open road. The seven-speed automatic transmission helps maximize efficiency. However, moving nearly 4,200 pounds still exerts its influence, particularly when the temptation to exploit the engine’s power is too strong. Aggressive acceleration and braking in city driving could have a negative impact on city MPG.

Annual fuel cost

The EPA calculates the annual fuel cost for the 2015 Porsche Panamera 4 3.6L to be $2,750. This figure is based on driving 15,000 miles per year, with an assumed fuel price reflecting a national average. Your individual fuel costs will vary depending on driving habits, local fuel prices, and the type of fuel used. Consider whether the cost of premium fuel is factored into this calculation. Frequent engagement of Sport mode can impact that annual average fuel cost.

Real-world expectations

While the EPA estimates provide a useful baseline, real-world fuel economy will vary. The Panamera 4 driver who spends a significant amount of time in congested city traffic, or who regularly enjoys spirited driving, will likely see figures closer to the city estimate, or even lower. Those who predominantly drive on highways with minimal traffic may approach or even exceed the 27 MPG highway estimate. A heavier foot will result in lower MPGs. Factors like tire pressure, overall vehicle maintenance, and the use of accessories like air conditioning can influence fuel consumption.

How it compares

Compared to other luxury sedans with all-wheel drive and comparable performance, the 2015 Panamera 4’s fuel economy sits roughly mid-pack. For example, the BMW 535i xDrive from the same year achieves a combined 23 MPG from its 3.0L turbocharged inline-6, offering a slight edge in efficiency. The Audi A7 3.0T Quattro, with its supercharged V6, posts EPA numbers of 22 MPG combined, making it very close to the Panamera. An S Class Mercedes however achieves 18 MPG combined city/highway. Performance and luxury come at a cost. Buyers should also investigate PANAMERA MPG across all years to determine the impact in efficiency over time.

Tips to maximize efficiency

Drive smoothly and avoid aggressive acceleration. The 3.6L V6 has plenty of power to deliver brisk acceleration when needed, but use it carefully to improve fuel economy. Every burst of acceleration is followed by deceleration, wasting fuel both ways.

Ensure tires are properly inflated. Correct tire pressure minimizes rolling resistance, which directly impacts fuel consumption. Check the tire pressure regularly and inflate to the recommended levels, which can be found on the driver’s side doorjamb or in the owner’s manual. For the most complete view check all Porsche fuel economy data.

Minimize unnecessary weight. Carrying extra cargo in the trunk or back seat adds weight to the vehicle, requiring the engine to work harder and consume more fuel. Remove any unnecessary items from the car to reduce weight and improve fuel efficiency.

Use cruise control on the highway. Maintaining a constant speed on the highway with cruise control can help optimize fuel economy. Be mindful of traffic conditions and avoid using cruise control in stop-and-go situations, as it can lead to inefficient acceleration and braking.