The 2005 Lincoln Navigator is available as a 4-door, 7-seat sport utility. Starting at $50,325, the 2005 Lincoln Navigator Luxury (100A) 4x2 is powered by a 5.4L , 8 -cylinder engine mated to an automatic transmission that returns an EPA estimated 13-mpg in the city and 18-mpg on the highway. The top of the line 2005LincolnNavigatorUltimate (220A) 4x4 , priced at $ 56,975 , is powered by a 5.4L , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated