28.3 MPG - 2018 Tahoe Premier 4x4 6.2L

RiverRunner

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Mar 4, 2015
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SoCal and North West AZ
I'm amazed at the fuel economy of my Tahoe. Now with almost 62k miles, recently driving solo from Las Vegas to Rancho Cucamonga, over 214 miles, used 1/4 tank of fuel, 28.3mpg on the DIC. It later went up to 29mpg as I descended down to Ontario, about 10 miles further. My cruise control was set to 74mph and hit no traffic. When I've made the same trip with a little traffic and cruising with the higher speed of traffic and 1-2 passengers, I usually see 22-23mpg. Fuel - 91 octane.
 
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