The Mazda Atenza or Mazda 6 is a mid-size car produced by the Japanese car manufacturer Mazda since 2002. The name Atenza is used only in Japan with the Mazda 6 moniker used everywhere else in the world. The Atenza/Mazda 6 replaced the Capella/626, and has sold over one million units worldwide since its introduction, hitting that sales milestone faster than previous Mazda.[1]

The Mazda Atenza was the first of the new generation of 'Stylish', 'Insightful', and 'Spirited' range from Mazda. It was followed by the Mazda 2 in December 2002, RX-8 in August 2003, Mazda3 in January 2004, MX-5 in October 2005, and Mazda CX-7 in November 2006.

The Mazda Atenza is currently raced in the SCCAPro Racing Speed World Challenge Touring Car Series. Mazda finished first in the manufacturer's championship standings.[2] Mazda Atenza/6 drivers also finished first and second in the Touring Car driver points.