I'm sure Ford won't release that till closer to Job1. But Ranger 4WD is rated at 20/24 city/highway MPG. That's a starting point, but keep in mind that many Broncos will have bigger, wider tires with more off-road oriented tread. It probably also has a worse drag coefficient. So, my guess is 17/20 (is there a pool on this yet?). Hopefully it'll be better. So the 2-door is definitely a short-range ride, but most people will probably still manage around 300 miles per tank.