Cadillac STS (Seville Touring Sedan) is a mid-size sedan that was produced by Cadillac from 2005 to 2011 and created as a successor to Seville. As few other Cadillac models that were produced between 2003 and 2011, STS was also built on Sigma platform. Vehicle was created for a market of North America, but car version was sold in China under the name of Cadillac SLS (Seville Luxury Sedan). In 2008 updated version was released and STS-V model with supercharged 4.4 L engine was introduced to the market.