The 2007 Kia Rio is available as a 4-door, 5-seat sedan. Starting at $10,770, the 2007 Kia Rio Base (M5) is powered by a 1.6L , 4 -cylinder engine mated to a manual transmission that returns an EPA estimated 32-mpg in the city and 35-mpg on the highway. The top of the line 2007KiaRioSX (A4) , priced at $ 14,345 , is powered by a 1.6L , 4 - cylinder engine mated to an automatic transmission that returns an EPA estimated 29-mpg in the city and 38-mpg on the highway.