The 2004 Kia Rio is available as a 4-door, 5-seat sedan. Starting at $9,740, the 2004 Kia Rio (M5) Sedan is powered by a 1.6L , 4 -cylinder engine mated to a manual transmission that returns an EPA estimated 26-mpg in the city and 33-mpg on the highway. The top of the line 2004KiaRio(A4) Wagon , priced at $ 12,240 , 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 32-mpg on the highway.