KCman2356

What kind of MPG is everyone getting on their lifted trucks? My buddy has a 15 gmc denali with the 6.2 and a 4 inch lift kit with toyo open country tires that are big but not massive. He said he got 12.5 mpg on a recent highway run which to me sounded crazy, I own a 15 denali with the 6.2 but is just all stock and i have always sat around 20mpg for highway runs. Is this what others get with their lifted trucks too? or is 12.5 a bit of an alarm thanks