The M201 employed a simple conventional structure, designed around a light metal frame with two rigid axles suspended on leaf springs. The 4-cylinder in-line engine (known in some quarters as the Willys Go Devil engine) was positioned at the front and the gear box, alongside the torque splitter, was in the middle of the vehicle alongside the driver. There was no roof and there were no doors. The standard version provided seating for four and an open load area at the back. The windscreen could be folded forward over the engine hood/bonnet.