 This was also partly due to the lack of a sufficiently strong engine; it had originally been intended to compensate for this by using a more efficient petro-electrical transmission.This kind of transmission has as a major drawback that it very easily overheats and the ARL 44 as a result was fitted with an impressive and complex array of ventilators and cooling ducts; the engine deck was made to extend behind the track to accommodate them all.Fuel reservoirs holding 1370 litres gave a range of 350 to 400 kilometres.