The 2015 Lincoln Navigator is available as a 4-door, 7-seat sport utility. Starting at $65,495, the 2015 Lincoln Navigator 4x4 is powered by a 3.5L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 15-mpg in the city and 20-mpg on the highway. The top of the line 2015LincolnNavigator4x2 , priced at $ 61,920 , is powered by a 3.5L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 16-mpg in the city and 22-mpg on the highway.