20 MPG combined won’t top any efficiency charts, but for the 2023 Porsche 911 Carrera 4S, it’s almost irrelevant. This is an experience, not basic transportation. It’s about maximum pleasure from every input, every burst of turbocharged power, and every precisely controlled corner, not saving money on gas. The buyer understands that performance has a price, including frequent fill-ups.

City and highway performance

The EPA estimates the 911 Carrera 4S at 18 MPG in the city and 23 MPG on the highway. The city figure reflects stop-and-go traffic, where the engine works to overcome inertia and the 3.0L flat-six can’t stretch its legs. On the open road, 23 MPG shows the engine’s efficiency at speed, with the smooth-shifting eight-speed PDK automatic transmission (AM-S8) keeping the engine in its sweet spot. That sweet spot is anywhere above 3,000 RPM.

Annual fuel cost

The estimated annual fuel cost for the 2023 Porsche 911 Carrera 4S is $2,900. This is based on 15,000 miles per year and national average fuel prices. This is just an estimate. Drivers who frequently exploit the car’s performance, and those in areas with higher fuel costs, will exceed this. Drivers who mostly use the vehicle for long highway trips and drive lightly could see a lower annual cost.

Real-world expectations

EPA figures are a useful benchmark, but real-world driving often varies. Someone who frequently uses Launch Control or goes to the track will see significantly lower fuel economy than the EPA suggests. A relaxed driver who uses the car for commuting or weekend trips might achieve slightly better results. Terrain, weather, and driving style all affect fuel consumption. Do not expect Prius-like numbers. This car is about exhilaration, not economy.

How it compares

The 911 Carrera 4S sits in a predictable position compared to rivals. The BMW M4 Competition xDrive, another performance icon with all-wheel drive, gets about 19 MPG combined. The Mercedes-AMG C 63 S Coupe, a V8, gets around 18 MPG combined. Even the Acura NSX hybrid supercar achieves only 21 MPG combined. For the 911 buyer, the differences of 1-3 MPG won’t be a deciding factor. They care more about handling precision, power, and the driving experience. You can find 911 MPG across all years to compare various models.

Tips to maximize efficiency

Maximizing fuel efficiency might not be the main concern of a 911 Carrera 4S owner, but steps can improve MPG. Resist the urge to constantly accelerate hard. The less time at full throttle, the less fuel burned. Find all all Porsche fuel economy data here.

Proper tire inflation is important for performance and efficiency. Ensure that your tires are inflated to the recommended pressures on the doorjamb sticker. Underinflated tires increase rolling resistance, which reduces fuel economy.

Minimize weight inside the vehicle. Every extra pound requires more energy to accelerate. Remove any non-essential items from the trunk or passenger area. This is useful for those who track their 911.

Optimize your driving style for smooth acceleration and braking. Avoid sudden bursts of speed or harsh braking, as these actions consume more fuel. Anticipate traffic and maintain a steady speed. Coasting will also increase efficiency.

Use the vehicle’s drive modes. Selecting “Normal” or “Eco” mode (if equipped) will optimize the engine and transmission for fuel efficiency. But you likely purchased the 911 to enjoy SPORT modes.