24 MPG combined doesn’t sound like much, but considering the 2018 Porsche 911 Carrera S, it’s an acceptable tradeoff for the performance. This isn’t a machine designed for maximizing fuel efficiency; it’s a precision instrument engineered for driving pleasure. Buyers prioritize cornering and exhilarating acceleration over saving money on gas, understanding that the Carrera S provides thrills few other vehicles can match.

city and highway performance

The EPA estimates for the 2018 911 Carrera S, equipped with the 3.0L 6-cylinder engine and the automatic (AM-S7) transmission, are 22 MPG in the city and 28 MPG on the highway. The city figure reflects the engine’s responsiveness in stop-and-go traffic, and suffers from frequent acceleration and idling. The higher highway number is a better indication of efficiency, achieved when cruising at steady speeds. These numbers show that the Carrera S, while thrilling, performs best when given room to stretch its legs.

annual fuel cost

The EPA estimates an annual fuel cost of $2,400 for the 2018 Porsche 911 Carrera S. This is based on driving 15,000 miles per year and using national average fuel prices. Keep in mind this is simply an estimate. If you drive substantially more or less than that amount, or if regional fuel prices are higher or lower, your actual costs will vary. Aggressive driving and premium fuel requirements will also increase this number. This is a benchmark to consider, alongside other ownership costs like maintenance and insurance.

real-world expectations

While the EPA provides standardized testing results, real-world mileage can vary depending on driving style and conditions. A driver who frequently uses the Sport or Sport Plus modes to enjoy the Carrera S’s acceleration, will likely see figures below the official estimates. However, a driver who prioritizes smooth, consistent throttle inputs and favors highway cruising can potentially match or even slightly exceed the EPA’s highway rating. The key is to acknowledge the car’s temptation to drive aggressively and consciously moderate your inputs if lower fuel costs are a concern.

how it compares

Compared to other sports cars, the 2018 911 Carrera S is in the middle for fuel economy. The Chevrolet Corvette Stingray, for example, achieves a similar 24 MPG combined with its automatic transmission, while offering more horsepower. The Jaguar F-Type, with its supercharged V6, gets around 23 MPG combined, trading some efficiency for its distinctive exhaust note. The BMW M4 achieves 20 MPG combined.

These comparisons are important because buyers cross-shop these cars and fuel consumption is part of the ownership costs. Prospective buyers can also review 911 MPG across all years to see how this model year compares within the 911 family.

tips to maximize efficiency

Use the automatic transmission’s ability to upshift quickly. Shift into the highest gear possible to keep engine RPMs low during steady-state cruising, whether in the city or on the highway. Resist the urge to constantly accelerate aggressively unless necessary.

Make sure your tires are properly inflated. The correct tire pressure reduces rolling resistance, improving fuel economy. This is especially important on a performance car like the 911, where handling depends on proper tire inflation. Refer to the sticker on the driver’s side doorjamb for the recommended pressure.

Avoid unnecessary weight. Extra cargo in the trunk or passenger seat increases the vehicle’s weight and reduces fuel efficiency. Remove any items that are not essential for daily driving. An empty trunk results in less gas consumption.

Plan your routes carefully. Avoiding congested areas and stop-and-go traffic can improve your fuel economy. Use navigation apps to identify alternative routes that minimize idling and frequent acceleration. Consider driving during off-peak hours to avoid traffic jams.

Regular maintenance is important. Keeping your engine properly tuned and ensuring all components are functioning can improve fuel efficiency. Schedule regular service appointments with a qualified technician to address any potential issues before they affect fuel consumption. Owners can explore all Porsche fuel economy data to compare this model against the rest of the Porsche lineup.