The 2007 Saturn AURA is available as a 4-door, 5-seat sedan. Starting at $20,345, the 2007 Saturn AURA XE is powered by a 3.5L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 20-mpg in the city and 29-mpg on the highway. The top of the line 2007SaturnAURAXR , priced at $ 24,345 , is powered by a 3.6L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 20-mpg in the city and 28-mpg on the highway.