The 2015 Porsche 911 Targa 4S returns 21 MPG combined, a figure that won’t win any green awards but is largely inconsequential to the buyer seeking a uniquely styled, open-air sports car with all-wheel drive and the unmistakable 911 driving experience. This car is about emotion, not economy, and the Targa 4S buyer understands that performance and exclusivity come at a price. The low volume of Targa sales within the broader 911 range confirms that this is a niche vehicle for a specific kind of enthusiast.

City and highway performance

The EPA estimates 18 MPG in the city and 25 MPG on the highway for the 2015 Porsche 911 Targa 4S, a spread typical of performance vehicles that prioritize power delivery and responsiveness over maximizing every last drop of fuel. Stop-and-go city driving inevitably takes a toll, while highway cruising, even at elevated speeds, allows the engine to settle into a more efficient operating range. The seven-speed PDK automatic transmission contributes to both performance and efficiency, providing quick shifts and optimized gear ratios for various driving conditions. However, the reality remains that the 3.8-liter flat-six engine under the rear deck is designed to deliver thrilling acceleration and a signature Porsche soundtrack, not hypermiling.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2015 Porsche 911 Targa 4S is $2,750. This figure is based on driving 15,000 miles per year and using national average fuel prices, which are constantly in flux. Individual spending will vary depending on driving habits, local fuel prices, and the specific type of fuel used. Given the Porsche’s performance capabilities, many owners are likely to opt for premium fuel, which will further increase the yearly cost.

Real-world expectations

While the EPA provides a standardized estimate, real-world fuel economy for the 2015 Porsche 911 Targa 4S will fluctuate considerably based on driving style. Spirited driving, characterized by frequent acceleration and high-speed cornering, will inevitably decrease fuel efficiency. Conversely, gentle acceleration, consistent speeds, and avoiding unnecessary idling can help owners achieve numbers closer to the EPA estimates. Ultimately, buyers prioritizing fuel savings may have mismatched expectations for this kind of vehicle.

How it compares

Compared to other high-performance vehicles in its class, the 2015 Porsche 911 Targa 4S offers fuel economy that’s neither exceptional nor abysmal. For example, the Jaguar F-Type R Coupe, with its supercharged V8, manages around 18 MPG combined. The BMW M4 Convertible, while offering similar performance, can achieve closer to 20 MPG combined. Even within the Porsche lineup, comparing the Targa 4S to other 911 configurations reveals differences; a base 911 Carrera with rear-wheel drive can see closer to 22 or 23 MPG combined. Buyers considering the Targa 4S are likely less concerned with squeezing every mile out of a gallon and more focused on the unique open-top driving experience and distinctive styling that the Targa offers. Explore 911 MPG across all years to see how this car has evolved.

Tips to maximize efficiency

The most impactful way to improve fuel economy in the 2015 Porsche 911 Targa 4S is to adopt a more relaxed driving style. Avoiding hard acceleration, maintaining consistent speeds, and planning routes to minimize stop-and-go traffic can make a noticeable difference. Remember that the Targa 4S is a performance car, but it’s also capable of comfortable cruising when driven judiciously.

Ensure your tires are properly inflated to the recommended pressure listed on the door jamb. Underinflated tires increase rolling resistance, which in turn reduces fuel efficiency. Regular tire pressure checks are a simple maintenance task that yields tangible benefits.

Reduce unnecessary weight in the vehicle. Extra cargo adds load to the engine, requiring more fuel to maintain performance. Removing items you don’t need can lead to incremental improvements in fuel economy, especially during city driving.

Consider using the Porsche’s “coasting” function when appropriate. This feature decouples the engine from the transmission when coasting, reducing engine braking and allowing the vehicle to glide more efficiently. Experiment with this feature on familiar routes to understand its impact on your driving style and fuel consumption.

Keep up with scheduled maintenance, particularly oil changes and air filter replacements. A well-maintained engine operates more efficiently. Refer to the Porsche owner’s manual for recommended intervals and procedures. You can compare this to all Porsche fuel economy data to understand trends across the whole brand.