The 2019 Porsche Boxster GTS 2.5L’s 22 MPG combined fuel economy won’t break any records. That’s not the point of this mid-engine sports car, which is designed for thrills instead of fuel-sipping efficiency. For drivers who prioritize sharp handling, a responsive turbocharged engine, and top-down driving, the fuel bill is part of the cost.

City and highway performance

The EPA estimates the Boxster GTS gets 20 MPG in the city and 26 MPG on the highway. The city MPG reflects stop-and-go traffic, quick acceleration from lights, and the aggressive driving the Boxster encourages. The 26 MPG highway figure is achievable on the open road, as long as you avoid excessive speed. Temptation is always present, however, and exploiting the car’s performance drops the highway MPG. The 7-speed dual-clutch automatic (PDK) transmission is fast, prioritizing performance over ultimate efficiency; it contributes to slightly lower MPG compared to cars with a manual transmission.

Annual Fuel Cost

The EPA calculates the annual fuel cost for the 2019 Porsche Boxster GTS at about $2,650. This is based on driving 15,000 miles per year and using the national average fuel price at the time of calculation. Your actual fuel cost will vary depending on your driving, the fuel you use, and fuel prices in your area. The Boxster GTS requires premium fuel, which raises the running costs. This is usually deemed acceptable for buyers willing to pay for the Boxster’s performance and driving experience.

Real-World Expectations

EPA estimates offer a baseline, but most Boxster GTS owners find their real-world MPG is slightly lower, especially with frequent spirited driving. Expect combined MPG in the high teens to low twenties, particularly if you commute in heavy traffic or mostly city driving. Weekend drives on winding roads will further affect fuel consumption. However, the driving experience is rewarding. Drivers considering a Boxster GTS are willing to accept the fuel costs of owning a high-performance sports car.

How it compares

The Boxster GTS exists among other vehicles. Competitors like the BMW Z4 M40i get around 25 MPG combined from its inline-six engine, offering similar performance with better fuel economy. The Audi TTS, with its turbocharged 4-cylinder, gets approximately 26 MPG combined, prioritizing all-wheel-drive traction and a technologically advanced interior. The Porsche’s own Cayman GTS, which is mechanically similar, achieves virtually identical fuel economy figures. The MPG differences between these cars highlight variations in engine tuning and driving. The Boxster’s raw and connected driving experience sets it apart. Porsche fuel economy data, including comparisons across the model range, is available online. Boxster GTS buyers often choose it, drawn to its character and open-top thrills, despite slightly lower MPG numbers. Check out the BOXSTER MPG across all years to see trends and comparisons over time.

Tips to maximize efficiency

Resist the urge to constantly push the engine. Keeping a steady foot and avoiding unnecessary acceleration can significantly improve fuel economy, especially on longer trips.

Proper tire inflation is critical for fuel efficiency and handling. Regularly check and maintain the tire pressure according to the manufacturer’s specifications. Underinflated tires increase rolling resistance, decreasing MPG.

Avoid carrying extra weight. The Boxster GTS is a lightweight sports car, and excess weight reduces its fuel efficiency. Remove unnecessary items from the car to minimize the load on the engine.

Use the car’s drive modes. The Boxster GTS offers driving modes to optimize fuel economy. Select ‘Normal’ or ‘Eco’ while cruising on the highway or in city traffic to reduce fuel consumption.

Minimize idling time. Idling wastes fuel. Turn off the engine when stopped for a long time, when the car will be stationary for several minutes.