Conventional systems for supporting the driver’s steering power work with hydraulics. They are in permanent operation – even if the driver is not moving the steering wheel at all. And this costs energy. In the case of Electric Power Steering, an electric motor replaces the hydraulics and only becomes active when the driver actually moves the steering wheel. On straight roads or with a constant steering angle in corners, the system does not intervene and uses no energy. Fuel consumption is reduced as a result, while the typical BMW dynamic driving experience is retained.