The Saturn Ion was a compact car sold by the Saturn marque of American automaker General Motors between the 2003 and 2007 model years. It used the GM Delta platform. The Ion replaced the Saturn S-Series in 2003, and was replaced by the new Saturn Astra in 2008. As of 2006, the Ion was the longest compact car sold in North America. Production of the Ion ended on March 27, 2007.