O4 wheelchairs have an extremely low energy consumption in their class. This is primarily due to the energy-efficient fixed frame with fixed rear axle. This means that the wheelchair is unable to be folded widthways. Folding wheelchairs lose a lot of energy, your energy, due to the folding mechanism.

In addition, a good balance setting ensures that little energy is required to ride the wheelchair. The seating system slides backwards relative to the chassis, thereby removing as much pressure on the front wheels as possible. Front wheels create eight times more rolling resistance than rear wheels when equally loaded. Minimum load on the front wheels makes manoeuvrability effortless.