18 MPG combined is not the reason someone buys a 2019 Porsche 911 Turbo S Exclusive Cabriolet. It’s the trade-off for performance, fine craftsmanship, and the experience of driving a street-legal rocket. Anyone concerned about maximizing fuel efficiency isn’t likely to be cross-shopping this car, even against other high-performance options. The Turbo S Exclusive Cabriolet exists for a buyer who values exclusivity and staggering acceleration above all else.

City and highway performance

The EPA estimates of 16 MPG in the city and 22 MPG on the highway reflect driving a high-performance, forced-induction engine. In urban environments, the 3.8L twin-turbocharged flat-six spends much of its time operating at lower speeds and under boost, consuming more fuel. The highway figure offers a slightly better picture. With consistent throttle input and less stop-and-go traffic, the engine can stretch the fuel a bit further. However, even on the open road, resisting the urge to use the car’s power will be a challenge, and doing so impacts fuel economy.

Annual fuel cost

The EPA estimates that the annual fuel cost for the 2019 Porsche 911 Turbo S Exclusive Cabriolet will be approximately $3,200. This figure is calculated based on driving 15,000 miles per year, with a mix of city and highway driving, and using the national average fuel price for premium gasoline. It’s a substantial sum, but prospective owners are unlikely to be deterred. This potent Porsche demands premium fuel, so fluctuating fuel prices will have a noticeable impact on the annual cost.

Real-world expectations

While the EPA provides a standardized estimate, fuel economy in a 911 Turbo S Exclusive Cabriolet can vary significantly based on driving style. Aggressive acceleration, frequent use of Sport or Sport Plus modes, and extended periods of idling will all negatively impact fuel consumption. Someone who frequently tracks their car or uses it primarily for short, spirited drives should expect lower figures than the EPA estimates. Conversely, a driver who adopts a more relaxed approach on longer journeys could potentially achieve numbers closer to the highway rating. See 911 MPG across all years.

How it compares

Compared to other high-performance convertibles, the 911 Turbo S Exclusive Cabriolet’s fuel economy is predictably low. For example, a 2019 Mercedes-AMG S63 Cabriolet achieves 17 MPG combined, while the less powerful 2019 Porsche 911 Carrera S Cabriolet still only manages 22 MPG combined. Even a more practical performance vehicle like the Audi RS7 nets 18 MPG combined. These figures highlight the compromises in extracting maximum performance from an internal combustion engine. The Turbo S buyer isn’t necessarily choosing a car that prioritizes fuel efficiency, but rather one that delivers an unparalleled driving experience, regardless of the cost at the pump. Explore all Porsche fuel economy data.

Tips to maximize efficiency

Resist the urge to constantly use the car’s immense power. Gentle acceleration and anticipatory driving will significantly reduce fuel consumption. The 911 Turbo S responds immediately to throttle inputs, so a measured approach can make a difference.

Use the car’s automatic start/stop system carefully. While some drivers find it intrusive, it can save fuel, especially in stop-and-go traffic. Be aware that frequent restarts can put extra strain on the starter motor.

Ensure that the tires are properly inflated. Underinflated tires increase rolling resistance, which reduces fuel economy. Check the tire pressure regularly and maintain it at the manufacturer’s recommended levels.

Avoid carrying unnecessary weight. Every extra pound adds to the workload of the engine, leading to increased fuel consumption. Remove any unnecessary items from the car to improve efficiency.

Consider using the car’s adaptive cruise control on long highway journeys. This system helps maintain a consistent speed and following distance, which can minimize unnecessary acceleration and braking, improving fuel economy.