Lol, I've already put 2k miles on this beast. I can go almost 800 miles on a single tank. It has a 40 gal or better fuel tank (I haven't let it get that low, so I'm not 100% sure) I didn't realize that this thing is a 1 ton (heavy suspension, 8 lug wheels, 9200 GVW) I absolutely love this truck. I had a much newer Escalade ESV and I didn't like it nearly as much as this.