95 MPG combined is an extraordinary figure, especially for a large, luxurious sedan like the 2015 Tesla Model S (60 kW-hr battery pack). This isn’t just about saving money on gas; it’s about embracing electric power and experiencing performance without the guilt typically associated with a car of this size and capability.

City and highway performance

The EPA numbers for the 2015 Tesla Model S 60 are remarkably consistent: 94 MPG in the city and 97 MPG on the highway. This near-identical performance reflects the electric motor’s efficiency at both low speeds with regenerative braking in urban environments and higher speeds during steady-state highway cruising. Unlike gasoline vehicles, which often see a significant drop in city MPG due to stop-and-go traffic, the Model S uses its electric powertrain to maintain excellent efficiency no matter the driving conditions.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2015 Tesla Model S 60 at exactly $800. This calculation is based on driving 15,000 miles per year and using the national average electricity price at the time of testing. While individual electricity rates vary, this figure provides a useful benchmark for comparing running costs against traditional gasoline-powered vehicles. The key word here is ‘fuel’ cost, not total running cost. While electricity is certainly cheaper than gasoline, there are other factors to consider like tire costs and eventual battery replacement down the road. However, for day-to-day use, the potential for sub-$100 per month ‘fuel’ bills is a major selling point for EV ownership.

Real-world expectations

While the EPA estimates provide a standardized comparison, real-world efficiency can vary depending on several factors. Driving style, ambient temperature, and terrain all play a role. Aggressive acceleration and frequent use of cabin climate control will reduce range and increase energy consumption.

Conversely, gentle driving and using preconditioning features while plugged in can help maximize efficiency. Also keep in mind that battery degradation will reduce range over time. A well-maintained battery pack will likely still be within 80% of its original capacity, but a badly maintained battery pack will experience noticeable range loss.

How it compares

To put the 95 MPG equivalent into perspective, consider other luxury sedans of the era. A 2015 BMW 535i, with its turbocharged inline-six, manages around 23 MPG combined. A 2015 Mercedes-Benz E350 achieves a similar 24 MPG. Even hybrid models like the 2015 Lexus ES 300h, known for its efficient powertrain, only reach around 40 MPG combined. The Model S doesn’t just beat them; it obliterates them. This difference is crucial for buyers looking to minimize their environmental impact or those simply tired of frequent trips to the gas station. You can find all Tesla fuel economy data on this site for further comparison.

Tips to maximize efficiency

Preconditioning the cabin is a simple yet effective way to conserve energy. While the car is plugged in, use the Tesla app to heat or cool the interior to your desired temperature before you leave. This draws power from the grid rather than the battery, preserving range for your journey.

Gentle acceleration and braking are key to maximizing efficiency in any electric vehicle. Avoid aggressive starts and stops, and use regenerative braking whenever possible. Anticipate traffic flow and lift off the accelerator early to allow the car to decelerate smoothly, recapturing energy and extending your range.

If you want to see how this compares to the MODEL MPG across all years, this website contains that data.

Tire pressure can have a surprising impact on efficiency. Ensure your tires are inflated to the recommended pressure, as indicated on the doorjamb sticker. Underinflated tires increase rolling resistance, which reduces range. A simple tire pressure check can save you a noticeable amount of energy over time.

Minimize the use of energy-intensive accessories. Features like heated seats and the defroster draw considerable power from the battery. Use them carefully, and consider layering clothing to stay warm instead of relying solely on the climate control system. Every little bit helps in extending your range.

Plan your routes strategically. Use the Tesla navigation system to find charging stations along your journey, and factor in charging time when planning longer trips. The navigation system will also optimize your route for efficiency, taking into account elevation changes and road conditions. Intelligent route planning is essential for maximizing range and minimizing range anxiety in an electric vehicle.