The 2003 Lincoln Navigator is available as a 4-door, 7-seat sport utility. Starting at $49,735, the 2003 Lincoln Navigator Premium (110B) 4x2 is powered by a 5.4L , 8 -cylinder engine mated to an automatic transmission that returns an EPA estimated 12-mpg in the city and 17-mpg on the highway. The top of the line 2003LincolnNavigatorLuxury (200A) 4x4 , priced at $ 52,035 , is powered by a 5.4L , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated 11-mpg in the city and 16-mpg on the highway.