The 2016 GMC Yukon is available as a 4-door, 7-seat sport utility. Starting at $48,315, the 2016 GMC Yukon SLE 4x2 is powered by a 5.3L , 8 -cylinder engine mated to an automatic transmission that returns an EPA estimated 16-mpg in the city and 23-mpg on the highway. The top of the line 2016GMCYukonDenali 4x4 , priced at $ 68,325 , is powered by a 6.2L , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated 15-mpg in the city and 21-mpg on the highway.