The Tesla Model S is a full-sized electric five-door, luxury lift back, produced by Tesla Motors. Since its introduction in June 2012 it has achieved rapidly growing sales, particularly in Norway andCalifornia. It scored a perfect 5.0 NHTSA safety rating. The US Environmental Protection Agency official range for the Model S Performance model equipped with an 85 kWh battery pack is 265 miles , topping the Tesla Roadster to lead the electric car market. EPA rates its energy consumption at 237.5 Wh per kilometer for a combined fuel economy of 89 miles per gallon gasoline equivalent .Global cumulative sales of the Model S passed the 25,000 unit mark in December 2013. The Model S became the first electric car to top the monthly new car sales ranking in any country, twice leading in Norway, in September and again in December 2013. As of September 2014, almost 47,000 units had been sold worldwide.