The Lexus HS is a dedicated hybrid vehicle introduced by Lexus as a new entry-level luxury compact sedan in 2009. Built on the same platform as the Avensis and Scion tC, it is classified as a compact under Japanese regulations concerning vehicle exterior dimensions and engine displacement. Unveiled at the North American International Auto Show in January 2009, the HS 250h went on sale in July 2009 in Japan, followed by the United States in August 2009 as a 2010 model.