A business-wise man once told me "Fuel Management may not be the sexiest but top fleet managers know it's where the money is."
Let’s get the obvious out of the way first: next to labor, fuel nearly always represents the highest cost of running a fleet. If you have your own fuel tanks and dispensers (AKA in-house fleet fueling), you need a fuel management system. No ifs, ands, or buts about it. The level of sophistication and control required will vary from one industry to the next and even between companies within the same industry. But the need for a minimal level of distribution and inventory control of fleet fuel is undeniable. Fuel is expensive, and maintaining inventories without knowing how much, to whom, when, and where it goes makes as much sense as having an open-bar bank account for all to dip into.