The 2008 Lincoln Navigator L is available as a 4-door, 7-seat sport utility. Starting at $51,745, the 2008 Lincoln Navigator L 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 18-mpg on the highway. The top of the line 2008LincolnNavigator L4x4 , priced at $ 54,645 , is powered by a 5.4L , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated