CONTROL SYSTEM, VEHICLE AND METHOD

An apparatus (145) for a vehicle (100) having an electric propulsion motor (123) and energy storage means (150) for powering the motor (123), the apparatus (145) being operable to generate an audible sound wherein at least one characteristic of the sound is dependent on an amount of energy stored in the energy storage means (150) and operable to vary the sound in dependence on a position of a user operated accelerator control (163).