24 Miles to the gallon open highway, well 23.4 but I like to be optomistic, headed south to FL earlier this year, I wasn't driving like a granny, though I wasn't driving like a teenager either. I only put in the dual bypass fuel regulator just weeks before. I think I need to do the CCV mod to clean out my Intercooler. Pretty nasty I suppose. I drove 750 miles on 32 gallons, pretty good by my standards.