The 2009 GMC Yukon Denali Hybrid proves that large, luxurious, full-size SUVs can hit the 20 mpg mark. It does so in both the city and out on the highway. The 2009 GMC Yukon Denali Hybrid standard features list is long and includes heated seats and a dual climate zone. This will keep all 8 passengers happy regardless of whether they are sitting up front, in the second row or even in the 3rd row. With a 26 gallon fuel tank and an average of 20 mpg, you can be sure the 2009 GMC Yukon Denali Hybrid will have a range that exceeds your typical usage and it will travel within that range in luxurious comfort.