The 2006 Nissan Titan is available as a 4-door, 5-seat regular side. Starting at $30,350, the 2006 Nissan Titan LE 4x2 King Cab is powered by a 5.6L , 8 -cylinder engine mated to an automatic transmission that returns an EPA estimated 14-mpg in the city and 18-mpg on the highway. The top of the line 2006NissanTitanLE w/FFV 4x4 Crew Cab , priced at $ 35,900 , is powered by a 5.6L , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated 14-mpg in the city and 18-mpg on the highway.