120 MPG combined is an almost absurd figure for a vehicle offering this level of performance, luxury, and technology. The 2021 Tesla Model S Long Range doesn’t sip fuel; it sips electrons, transforming kilowatt-hours into effortless acceleration and quiet cruising. This isn’t your typical fuel economy discussion because the Model S Long Range isn’t your typical sedan. Its buyers prioritize cutting-edge technology, rapid charging capabilities, and zero emissions above all else. The impressive “MPG” is simply the cherry on top, a constant, quiet reassurance that they’re making a fiscally and environmentally responsible choice, even while unleashing supercar-rivaling acceleration.

City and highway performance

The EPA numbers reveal a slight edge for city driving, with 124 MPG compared to 115 MPG on the highway. This might seem counterintuitive, but it reflects the regenerative braking system’s effectiveness in stop-and-go traffic. Every time the driver lifts off the accelerator, the electric motors recapture kinetic energy, feeding it back into the battery. This reduces the need to draw power from the grid, boosting efficiency. Highway driving, with its more consistent speeds and fewer opportunities for regeneration, results in a slightly lower “MPG” equivalent. Even so, 115 MPG on the open road is a staggering achievement, allowing for cross-country road trips with guilt-free, near-silent operation. Explore all Tesla fuel economy data to see how this car compares to other options from the same manufacturer.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2021 Tesla Model S Long Range at exactly $650. This figure is calculated based on driving 15,000 miles per year, using a combination of city and highway driving, and factoring in the national average electricity prices. It’s a notable number, especially when compared to similarly sized luxury sedans with internal combustion engines. For drivers covering significant mileage, the savings can be substantial, offsetting some of the Model S’s initial purchase price. Even with fluctuating electricity prices, the inherent efficiency of an electric drivetrain makes it far more predictable and generally less expensive than gasoline.

Real-world expectations

While the EPA figures provide a standardized benchmark, real-world “MPG” in the Model S Long Range can vary depending on driving habits, ambient temperature, and terrain. Aggressive acceleration, high speeds, and frequent use of climate control can all reduce efficiency. Cold weather is a particularly significant factor, as the battery’s performance can be temporarily diminished, and more energy is required to heat the cabin. Conversely, gentle acceleration, moderate speeds, and careful use of regenerative braking can enhance efficiency, potentially exceeding the EPA estimates. Many owners find they can achieve substantially better “MPG” in favorable conditions. Learn about MODEL MPG across all years in FuelEconomyHub’s vehicle database.

How it compares

The 2021 Tesla Model S Long Range’s 120 MPG equivalent completely eclipses its gasoline-powered competition. A Mercedes-Benz S580, for example, achieves a combined 22 MPG. The BMW 750i xDrive nets you, at best, a combined 20 MPG. And even the plug-in hybrid Porsche Panamera 4 E-Hybrid, while offering some electric driving range, only manages a combined 51 MPG. These comparisons underscore the Model S Long Range’s efficiency advantage. Buyers in this segment are often willing to pay a premium for performance and luxury, but the Tesla’s exceptional efficiency provides a tangible and ongoing cost savings, further improving its value.

Tips to maximize efficiency

Take advantage of regenerative braking. The Model S Long Range offers different regenerative braking settings. Experiment to find the one that suits your driving style best. Using the “Standard” setting allows for more aggressive regenerative braking, maximizing energy recapture and minimizing the need to use the friction brakes.

Precondition the battery. Especially in cold weather, preconditioning the battery before a trip can significantly improve efficiency. Use the Tesla app to warm up the battery while the car is still plugged in. This ensures optimal performance from the moment you start driving, reducing the strain on the battery and extending your range.

Optimize your driving style. Smooth acceleration and consistent speeds are key to maximizing efficiency in any vehicle, but especially in an electric car. Avoid sudden bursts of acceleration and maintain a steady pace on the highway. Use the in-car energy consumption display to monitor your driving habits and identify areas for improvement.

Plan your charging stops carefully. Use the Tesla Supercharger network, or other compatible charging stations, to keep your battery topped up during long trips. Pre-planning your route and identifying charging locations ensures that you’re always within range of a charge, reducing range anxiety and allowing you to drive with confidence.

Pay attention to tire pressure. Maintaining the correct tire pressure reduces rolling resistance, which improves efficiency. Check your tire pressure regularly and inflate them to the recommended level. Not only will this improve your “MPG,” but it will also extend the life of your tires and improve handling.