LamboTexas
Well-known member
Finally did a hand calculated check of mpg for a 450 mile trip. 2021 AT4 6.2 stock other that Borla catback exhaust. Got 18.7 driving 80-85 on highway. Probably 80% hwy and 20% City driving. Pretty dang good for an engine with this horsepower. I’m going to be willing to give up a few mpg so that I can go with a bigger tire soon. Also, Truck bed had about 350 pounds of horse feed. Pretty happy.