Car and Driver achieved 77 MPGe during a recent test of the Tesla Model X P90DL. The car contains the largest battery that Tesla currently offers, a 90 kWh lithium-ion battery pack, which is rated to go 250 miles on a single charge.
Inside The Tesla Model X
The Model X is AWD and boasts 463 hp. Add Ludicrous mode to the equation (a $10,000 bonus option) and the battery output is increased to get the horsepower up to 532 hp. At speeds up to 50 MPH, the maximum power is felt due to 713 pound-feet of torque. The 5,594 lb. SUV can achieve 0-60 in 3.3 seconds.
Car and Driver noted that the Falcon Wing doors are slow to open, and it isn't difficult to hit your head on them if you aren't careful. However, once they are open, the second and third row seats are very accessible.
The ride was described as "firm, yet comfortable". The seats, "supportive" and upholstered with soft leather. The vehcile has the same 17-inch touch screen as the Model S, which controls most everything that the car has to offer.
While the electric drivetrain is nearly silent, realize that this means the driver will notice more wind and road noises that ICE vehicles tend to cover up. Despite this, Car and Driver was impressed by their decibel readings.
Once the battery pack begins to heat up, the car doesn't perform at its best. Cooling fans aid in the situation, but are loud. Waiting it out is the only ultimate solution to get the car back to top specs. In real-life situations, most drivers won't be doing multiple, rigorous racing runs, so the battery should't be impacted like it was in Car and Driver's testing.
Source: Car and Driver