The Toyota Prius (; plural: Prii ) is a full hybrid electric mid-size hatchback, formerly a compact sedan developed and manufactured by Toyota.
The EPA and California Air Resources Board (CARB) rate the Prius as among the cleanest vehicles sold in the United States based on smog-forming emissions. The Prius first went on sale in Japan in 1997, and was available at all four Toyota Japan dealerships, making it the first mass-produced hybrid vehicle. It was subsequently introduced worldwide in 2000. The Prius is sold in almost 80 countries and regions, with its largest markets being those of Japan and the United States.
Global cumulative Prius sales reached the milestone 1 million vehicle mark in May 2008, 2 million in September 2010, and passed the 3 million mark in June 2013. Cumulative sales of 1 million Prii were achieved in the U.S. by early April 2011, and Japan reached the 1 million mark in August 2011. In 2011, Toyota expanded the Prius family to include the Prius v, an extended hatchback wagon, and the Prius c, a subcompact hatchback.
The production version of the Prius plug-in hybrid was released in 2012. The Prius family reached global cumulative sales of 4.8 million units by September 2014, representing 67.7% of the 7 million hybrids sold worldwide by Toyota Motor Company since 1997. Global sales of the Prius c family passed the 500,000 mark in August 2013.