Saturn Aura is a midsize car that was produced by the now defunct General Motors division Saturn from 2007 to 2009. It was offered as a 4-door sedan, and was Saturn's top-of-the-line model in the US market. It had a 3.6 litre V6 engine, and came with either a 4 speed automatic or 6-speed automatic transmission. It was available in 3 trims, the XE, XR, and the top of the line Green Line, which featured an upgraded fuel economy, flex-fuel capability and other environmental features.