The 2015 Tesla Model S (85 kW-hr battery pack) achieves an EPA-estimated 89 MPGe combined, a figure that goes beyond the traditional MPG metric, showing near-silent, emissions-free driving for those who want an electric car. This is about a commitment to sustainable transportation in a sleek, technologically advanced car.

City and highway performance

Tesla buyers are attracted by the Model S’s quick performance, long range, and new technology. The EPA estimates 88 MPGe in the city and 90 MPGe on the highway, numbers that are very close. This shows how electric vehicles work, where regenerative braking in city driving increases efficiency, nearly balancing the aerodynamic advantages at higher highway speeds. The instant torque from the electric motor makes acceleration easy, for a very responsive and quiet driving experience whether you’re driving in the city or on the highway.

Annual fuel cost

According to the EPA, the annual fuel cost for the 2015 Tesla Model S (85 kW-hr battery pack) is just $850. This is based on driving 15,000 miles per year and using national average electricity prices. This is an estimate, and your costs will change based on your local electricity rates, driving habits, and even the temperature (battery performance can be affected by cold). However, the $850 shows the potential for savings compared to gasoline vehicles. While the price of a Model S is higher, the long-term costs can be lower because you don’t need gasoline and there’s less maintenance.

Real-world expectations

The EPA numbers are a benchmark, but real-world MPGe will depend on factors specific to electric vehicles. Fast acceleration, frequent use of “ludicrous mode,” and high speeds can reduce range. But, using regenerative braking, preconditioning the cabin while plugged in, and driving at moderate speeds will increase efficiency and driving range. The Tesla’s energy display provides feedback, so drivers can watch their usage and change their driving style.

How it compares

Compared to gasoline luxury sedans, the 2015 Tesla Model S’s 89 MPGe is almost impossible to compare. A Mercedes-Benz S550 from the same year gets around 20 MPG combined. Even hybrid cars like the Lexus LS 600h, which gets about 20 MPG combined, are much less efficient than the Model S. The BMW 740i gets similar fuel economy. This shows the change in fuel economy achieved by electric cars. People buying a Model S aren’t comparing based on small MPG gains; they want a different way of using energy and impacting the environment.

Looking at other EVs of the time, the Nissan LEAF achieved around 114 MPGe combined, but with a shorter range and a different purpose than the Tesla. You can find all Tesla fuel economy data, and it is easy to see why someone would have purchased the Model S. The MODEL MPG across all years is easily searchable and comparable.

Tips to Maximize Efficiency

Take advantage of regenerative braking: The Model S offers adjustable regenerative braking settings. Try the “Standard” setting to increase energy recovery when slowing down. Watch traffic and reduce your use of the brakes to recapture energy and extend your range.

Precondition the cabin while plugged in: Heating or cooling the inside while the car is still plugged in uses grid power instead of the battery. This helps during winter when heating the cabin can reduce range.

Optimize tire pressure: Make sure your tires are inflated to the recommended pressure, as shown on the doorjamb sticker. Inflated tires reduce rolling resistance and increase efficiency. Check tire pressure, especially during temperature changes.

Minimize aerodynamic drag: Remove items from the roof rack or cargo carrier, as they increase aerodynamic drag and reduce efficiency. Even small changes can change mileage, especially at higher speeds.