86 MPG combined is an astonishing figure for the 2016 Tesla Model X AWD, P100D. This isn’t just an efficient commuter car, it’s a seven-seat, falcon-winged SUV that accelerates from 0-60 mph as fast as a supercar. The fact that it achieves this level of efficiency with that much performance and utility shows Tesla’s engineering ability and explains its popularity with a certain type of affluent, eco-conscious performance enthusiast.

City and highway performance

The EPA rates the 2016 Model X P100D at 81 MPG in the city and a higher 92 MPG on the highway. This difference is due to how electric motors work. In stop-and-go city driving, the Model X can use regenerative braking to recapture energy, which reduces how much it relies on the battery pack. On the highway, maintaining speed requires continuous power output, leading to a slight decrease in overall efficiency. These numbers are estimates, but they provide a good baseline for comparison against other electric SUVs and even some hybrids. The city figure is particularly impressive considering the vehicle’s weight and size. Many gasoline SUVs struggle to achieve even half of that efficiency in urban environments.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2016 Tesla Model X P100D at $900. This calculation is based on driving 15,000 miles per year using national average electricity prices. It’s critical to understand that this figure represents an average. Those who primarily drive in areas with higher electricity rates will see a higher annual cost. However, owners who have solar panels or access to off-peak charging can significantly reduce, or even eliminate, their expenditure on electricity for the Model X. There are also savings from not paying for oil changes and paying far less for brake service because of regenerative engine braking. Buyers of this car are savvy, wealthy, busy, and willing to pay for the very best EV available.

Real-world expectations

EPA figures provide a standardized benchmark, but real-world fuel economy for the 2016 Model X P100D can vary. Factors like driving style, ambient temperature, and the use of features like air conditioning and “Ludicrous Mode” can impact energy consumption. You can expect less range and a lower equivalent MPG when routinely using the car’s maximum acceleration. However, those who prioritize smooth, consistent driving and pre-condition the cabin while plugged in should see results closer to the EPA estimates. Owners who use regenerative braking aggressively will see more mileage between charges than owners who drive more aggressively.

How it compares

Compared to other SUVs in its class, the 2016 Model X P100D stands alone in terms of efficiency. Traditional luxury SUVs like the BMW X5 xDrive40i typically achieve around 23 MPG combined, while even hybrid SUVs such as the Lexus RX 450h only manage around 30 MPG. The fully electric nature of the Model X is a huge advantage. More modern all-electric SUV competitors like the Jaguar I-Pace achieve approximate combined MPGe of 76, showing how far ahead of the competition the Model X was when it first debuted. To review all Tesla fuel economy data, consider the MODEL MPG across all years to understand how each model has improved over time. For buyers prioritizing both performance and lower fuel costs, the Model X’s blend of fast acceleration and zero tailpipe emissions continues to be beneficial.

Tips to maximize efficiency

Aggressive acceleration hurts efficiency in any vehicle, and the Model X P100D is no exception. It’s tempting to unleash the full force of “Ludicrous Mode,” but doing so will dramatically reduce your range. Smooth, gradual acceleration will help you conserve energy and extend your driving distance.

Pre-conditioning the cabin while the vehicle is plugged in can significantly reduce energy consumption. By heating or cooling the interior before you unplug, you’re drawing power from the grid rather than the battery, preserving your range. This is particularly beneficial in extreme temperatures.

Regenerative braking helps maximize efficiency. Learn the various regen settings and learn to anticipate traffic flow so you can lift off the accelerator and recoup energy whenever possible. Mastering one-pedal driving can contribute noticeably to range extension.

Keep an eye on your tire pressure. Underinflated tires increase rolling resistance, which forces the motor to work harder. Maintaining the recommended tire pressure ensures optimal efficiency and prolongs the life of your tires. This small change can save hundreds of dollars in electricity over the ownership period.