Accepting 20 MPG combined comes with the territory when you buy a 2024 Porsche 911 Carrera 4 Cabriolet. This isn’t about maximizing gas mileage; it’s about experiencing unfiltered sports car thrills with the added benefit of open-air driving. The typical buyer isn’t considering a Prius. They’re seeking a visceral connection to the road and the unmistakable sound of a flat-six engine, and they’re happy to pay for it.

City and highway performance

The EPA estimates the 2024 911 Carrera 4 Cabriolet gets 18 MPG in the city and 24 MPG on the highway. These figures reflect the challenges that come with driving a performance vehicle. Congested city driving reduces fuel economy, since the engine uses more power to accelerate from a stop. The highway rating represents consistent speeds that allow for better fuel economy. The 3.0L turbocharged flat-six is engineered with efficiency in mind.

The advanced engine management system and eight-speed automatic transmission (AM-S8) are optimized for both performance and fuel economy, helping to reduce fuel consumption when possible.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2024 Porsche 911 Carrera 4 Cabriolet at $2,900. This figure assumes 15,000 miles driven per year and uses national average fuel prices. Since premium fuel is required for the best performance and to maintain the car, your actual costs could be higher if fuel prices in your area are above average.

Real-world expectations

The EPA provides a standard for comparison, but real-world fuel economy varies depending on driving habits, traffic, and even the weather. Expect lower MPG if you frequently use the 911’s performance capabilities, which is hard to resist. On the other hand, consistent highway driving at moderate speeds can produce results close to, or even slightly above, the EPA estimate. Understanding your driving style and typical routes helps predict your fuel costs.

How it compares

The 911’s fuel economy is competitive among high-performance convertibles. The BMW M4 Competition Convertible, with its 3.0L inline-six, achieves 16 MPG city and 23 MPG highway, slightly lower than the 911. The Audi R8 Spyder V10, offers a naturally aspirated ten-cylinder experience, but gets about 13 MPG city and 20 MPG highway, a significant difference. The Chevrolet Corvette Convertible, with a V8, gets around 16 MPG city and 24 MPG highway. These comparisons matter as the 911 buyer weighs the performance, prestige, and open-air experience against fuel costs to see if it fits their needs. Explore 911 MPG across all years to see how economy has changed over time.

Tips to maximize efficiency

Be careful with the accelerator. The 911’s turbocharged engine responds quickly to small changes in pedal pressure. Smooth acceleration reduces fuel consumption relative to sudden stops and starts. Try to avoid constantly pushing the car to its limits in everyday driving.

Select “Normal” or “Eco” driving mode when you can. The 911 has driving modes that adjust the engine and other settings for performance or efficiency. Choose a less aggressive mode during commutes or on the highway to reduce fuel consumption.

Keep tires properly inflated. Underinflated tires increase rolling resistance, which makes the engine work harder and reduces fuel economy. Check tire pressures regularly and follow the recommended values on the door.

Remove unnecessary weight. Carrying extra weight in the car reduces fuel efficiency. Take out any non-essential items, especially heavy objects, from the trunk and interior.

Plan trips and avoid traffic. Stop-and-go traffic wastes fuel. Combine trips when possible and select routes to minimize congestion, which reduces idling and improves acceleration efficiency. For all Porsche fuel economy data, visit FuelEconomyHub.com.