20 MPG combined. The EPA gives that figure to the 2021 Porsche 911 Targa 4 with its 3.0-liter flat-six and automatic transmission, a number that realistically isn’t the main concern for someone fortunate enough to put this car in their garage. This isn’t about squeezing every last mile from a gallon; it’s about experiencing the thrill of a legendary sports car with the added allure of open-air driving, even if that openness comes with a slightly more complex roof mechanism.

City and highway performance

The EPA estimates the Targa 4 will achieve 18 MPG in the city and 24 MPG on the highway. The difference between these two figures highlights the 911’s duality. In urban settings, where stop-and-go traffic and more aggressive acceleration are common, fuel consumption naturally increases. On the open road, however, the advanced engine management and the responsiveness of the eight-speed PDK transmission allow for more efficient cruising, pushing the highway MPG closer to the mid-20s. The 911 isn’t meant to sit in gridlock, but when conditions allow, its engine can deliver respectable mileage relative to its mission: to perform.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2021 Porsche 911 Targa 4 at $2,900. This figure is based on driving 15,000 miles per year and using national average fuel prices for premium gasoline, which the 911 requires. It’s an important number to acknowledge, putting a tangible dollar amount on the cost of owning and enjoying a high-performance vehicle like the Targa 4. For the demographic considering this Porsche, that $2,900 annual cost likely represents a manageable expense. However, it is a figure which might give some pause, especially in contrast to more frugal vehicles on the market.

Real-world expectations

While the EPA provides a standardized benchmark, your actual fuel economy will vary. Driving style plays an important role. Frequent bursts of acceleration to exploit the engine’s 379 horsepower will significantly reduce MPG. A more measured approach, using the car’s impressive torque and allowing the transmission to shift smoothly, can yield results closer to the EPA estimates. Also consider that environmental factors like weather, road conditions, and even tire pressure can affect fuel consumption. Your personal driving habits will ultimately dictate how close you get to the advertised numbers. You can view 911 MPG across all years to compare efficiency against other models.

How it compares

Compared to other high-performance convertibles and coupes, the 911 Targa 4’s fuel economy is predictably in line. The BMW M4 Competition Convertible, for example, with its 503-horsepower engine, manages around 16 MPG combined. The Mercedes-AMG C63 S Cabriolet, another potent contender, hovers around 18 MPG combined. Even within the Porsche family, other 911 variants offer similar figures. The 911 Carrera Cabriolet, with a similar engine, offers roughly comparable MPG. This says more about the class of car than the unique characteristics of the Targa 4. Ultimately, those seeking better fuel efficiency should look outside of the high-performance sports car realm. For a broader perspective, check out all Porsche fuel economy data.

Tips to maximize efficiency

Although the 911 Targa 4 isn’t primarily bought for its fuel efficiency, there are ways to optimize your MPG. Avoid aggressive acceleration and braking. The PDK transmission is exceptionally adept at selecting the best gear for efficiency, so allow it to do its job without overriding inputs. Smooth, progressive throttle application is key to keeping fuel consumption in check.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Check your tire pressures regularly and adhere to the recommended settings listed on the doorjamb.

Reduce unnecessary weight in the vehicle. Carrying extra cargo adds to the car’s overall mass, leading to increased fuel consumption. Remove any items that aren’t essential for your daily driving to lighten the load.

Use the car’s “Normal” driving mode whenever possible. While “Sport” and “Sport Plus” modes enhance performance, they also alter the engine and transmission mapping, resulting in higher fuel consumption. Choose “Normal” mode during everyday driving to prioritize efficiency, saving the sportier settings for your more spirited excursions.