If you think fuel costs are high or are looking for a new GMC Yukon with good gas mileage then you are probably interested in knowing which GMC Yukon MPG is best. Obviously the smaller the vehicle the better the fuel economy and with more and more alternative fuel vehicles like hybrid and electric there is a good selection of fuel efficient cars from which to choose. For each GMC Yukon you will see the highway MPG city MPG and combined MPG which assumes you drive 55 on city roads and 45 on the highway. To make it easy to understand the fuel costs and compare across vehicles we calculate the cost to drive 25 miles and the annual fuel cost which assumes you drive 15 000 miles in a year. Click on a car to see more details on the new GMC Yukon MPG. Select other criteria such as another make model bodystyle size etc to see the MPG or gas mileage for other new vehicles.