The 2015 Lincoln Navigator L is available as a 4-door, 7-seat sport utility. Starting at $64,285, the 2015 Lincoln Navigator L 4x2 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 2015LincolnNavigator L4x4 , priced at $ 67,860 , 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 19-mpg on the highway.