The Saturn Aura helped Saturn redefine its brand image when it was introduced in 2007. From the gate, the Aura gained notable attention by grabbing such coveted awards such as the 2007 North American Car of the Year. In addition to the sporty Aura XR that offers a 252-horsepower V-6, the Aura Green Line uses GM’s mild-hybrid system to provide improved fuel economy. The Saturn Aura comes with a five-year/100,000-mile powertrain warranty and gets an estimated 26-33 mpg on the highway; the Aura Green Line gets 34 mpg on the highway.