DS is the luxury vehicle division of Citroën. The DS marque was first announced in early 2009 by Citroën as a premium sub-brand added to certain models, with DS being an abbreviation of Different Spirit or Distinctive Series (although the reference to the historical Citroën DS is evident), to run in parallel to its mainstream cars. Since 2015 (and since 2012 already in China), the Citroen branding was dropped from the DS line models, and DS continued as a standalone brand. According to PSA CEO Carlos Tavares, DS will keep using the same platforms and dealerships as other PSA models, but will distinguish itself from Citroën cars by using "separate manufacturing and engineering standards".