The 2017 GMC Yukon is available as a 4-door, 7-seat sport utility. Starting at $48,530, the 2017 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 2017 GMC Yukon Denali 4x4, priced at $68,965, 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.