 The Re.2000 had no fuel tanks contained within the fuselage; nevertheless, using the entirety of the wing's internal volume for fuel tankage, it could house a maximum of 460 kg (640 lt) of gasoline, providing it with a 900–1,100 km endurance, far in excess of its contemporary rivals built by Macchi and Fiat.However, the Re.2000 was considered to be not as rugged as its Macchi-built contemporaries; specifically, its fuel tanks were considered to be vulnerable, which were not of the self-sealing variety then becoming popular in military service.It has been claimed that this lack of durability had been a major factor when, following an official evaluation by the "Regia Aeronautica", the service decided to reject the type.