A 777X beats its predecessors according to miles per gallon per passenger.

Miles per gallon (MPG) is well-established as the standard measure of fuel economy. It's so well established, in fact, that few of us question the MPG rating on a daily basis — at least until we ...

With one of the highest operating costs of any aircraft in the USAF fleet, the B-2 is a highly effective yet expensive stealth bomber. Its estimated fuel consumption of 0.28 miles per gallon is a lot ...