Tesla cuts prices for its most expensive electric vehicles to drive demand

Cuts range from 4% on performance version of Model S to 9% on more expensive Model X

Tesla has cut prices on its two most expensive electric vehicles in the United States, according to the company's website, days after its chief executive, Elon Musk, said recent price cuts on other models had stoked demand.

The price cuts, Tesla's fifth adjustment since the start of the year, ranged from 4% on the performance version of the Model S to 9% on the more expensive Model X.