The Cadillac ATS is a compact executive 4-door sedan manufactured and marketed by Cadillac and developed at the General Motors Technical Center in Warren, Michigan. The ATS base engine had been a naturally aspirated 2.5-liter I-4 gasoline engine that produces 202 horsepower (151 kW). Cadillac debuted the ATS to the press in the United States in January 2012, placed the ATS into production in July 2012 and began selling the ATS in the United States in August 2012 as a 2013 model.
From @yaropol80