The bin forms the back compartment of the vehicle; the larger front compartment is for the crew and engine. The four-cylinder 38 hp engine is positioned in the centre, with the driver to its left and the commander to its right. The gear box (six speeds forward, two reverse), differential and transmission are placed in front of the engine. These mechanical parts are placed under two projections on the otherwise very steeply sloped armour of the glacis; these can be retracted for maintenance of the mechanical parts. Each crew member, sitting below a hatch that is the only way of entrance or exit, has a fuel tank behind its seat, together having a total capacity of 56 litres, allowing for a range of a hundred kilometres. The exhaust pipe runs in front of the commander to the right ending in a silencer on the right side of the vehicle; in later production vehicles an armoured cover was added; as it tended to overheat a later variant of this cover had cooling slits.