Pressurized Tank: Notes

The pressurized fuel tank in the E72 has a shape similar to the fuel tank in the E71. However, the pressurized fuel tank in the E72 is not made of plastic, but of uncoated stainless steel. This way, the pressurized fuel tank can be distinguished even better from a "normal" fuel tank made of plastic. The weight of the pressurized fuel tank is approx. 25 kg and thus is 11 kg heavier than the fuel tank in the E71. The pressurized fuel tank is designed for a pressure range between -150 millibars and +350 millibars. While driving the pressure range is reduced and lies between -90 and + 100 millibars.

The fuel tank capacity has the same volume as that of the E71 and holds 85 liters.

Fig 1: Identifying Pressurized Tank

Courtesy of BMW OF NORTH AMERICA, INC.