The 2004 Honda Odyssey is available as a 4-door, 7-seat passenger van. Starting at $29,990, the 2004 Honda Odyssey EX-L w/DVD Entertainment System is powered by a 3.5L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 18-mpg in the city and 25-mpg on the highway. The top of the line 2004HondaOdysseyEX w/DVD Entertainment System , priced at $ 27,740 , is powered by a 3.5L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 18-mpg in the city and 25-mpg on the highway.