BMW X3 : Electromechanical power steering

Electromechanical power steering.

The electromechanical power steering system only activates when it's needed: when you're turning the wheel. It draws electrical power from the battery, which Brake Energy Regeneration has previously captured from the vehicle's kinetic energy.

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This element of BMW EfficientDynamics replaces the conventional hydraulic power-steering system with an electric motor. While hydraulic systems constantly draw power from the engine – thereby consuming extra fuel – the innovative BMW system only springs into action when it's actually needed. If you don't move the steering wheel (on a straight, for example, or on a steady curve) the electric motor remains inactive, reducing power consumption.

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