The 2003 Hyundai XG350 is available as a 4-door, 5-seat sedan. Starting at $23,999, the 2003 Hyundai XG350 Base is powered by a 3.5L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 17-mpg in the city and 26-mpg on the highway. The top of the line 2003HyundaiXG350L , priced at $ 25,599 , is powered by a 3.5L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 17-mpg in the city and 26-mpg on the highway.