Originally Posted by idiq

Another reason why it's not such a simple mileage comparison is because a fixed gear helps to 'push itself' - while one can stop pedaling and simply coast on a geared bike, a FG helps pull my legs making each revolution easier then from a dead-stop. For instance, given the same gearing on a fixed gear vs. a single speed (or a geared bike in one gear) I'd much rather climb with the fixed.