Introduced in 2016, this crossover with the problematic "falcon wing" doors is already losing its base version with 60-kWh battery. On the other hand, an ultrapowerful P100D version is added at the top of the lineup. Last summer, the 70 version gained 5 kWh to become the 75, while the P90D offers a 2268-kilogram (5000-pound) towing capacity. Unlike the Model S on which it is based, the Model X is only available with all-wheel drive.