The 2008 Kia Rio is available as a 4-door, 5-seat sedan. Starting at $10,890, the 2008 Kia Rio Base (M5) is powered by a 1.6L , 4 -cylinder engine mated to a manual transmission that returns an EPA estimated 27-mpg in the city and 32-mpg on the highway. The top of the line 2008KiaRioSX (A4) , priced at $ 14,465 , is powered by a 1.6L , 4 - cylinder engine mated to an automatic transmission that returns an EPA estimated 25-mpg in the city and 35-mpg on the highway.