Electric machine comprising an electric motor and a magnetic gear arrangement, - wherein the electric motor is a brushless motor, - wherein the electric motor comprises - a stator with a first number of electric windings in the form of wire coils disposed circumferentially around a longitudinal axis of the electric machine and - a rotor with a second number of permanent magnets of alternating polarities rotatable in respect to the stator about the longitudinal axis during operation of the electric motor, - wherein the magnetic gear arrangement is located in a manner displaced along the longitudinal axis in respect to the electric motor, and - wherein the magnetic gear arrangement comprises - a first magnetic element with a third number of permanent magnets, - a second magnetic element with a fourth number of permanent magnets, and - a modulator comprising a fifth number of ferromagnetic elements disposed between the third number of permanent magnets and the fourth number of permanent magnets, wherein the first magnetic element, the second magnetic element and the modulator are rotatable in respect to each other about the longitudinal axis, wherein one of the elements (41, 44) or the modulator is connected to the rotor of the electric motor in a torque proof manner, and wherein another one of the elements (41, 44) or the modulator is connected to an output shaft of the electric machine in a torque proof manner, and - wherein the electric motor comprises an internal stator and an external rotor rotatable externally around the stator about the longitudinal axis during operation of the electric motor, characterized in that - a venting element is attached to or forms part of at least one of the rotating parts (34; 41; 44) of the electric machine, - the venting element is located between the external rotor of the electric motor and the first magnetic element of the magnetic gear arrangement, and - the venting element is made of an electrically isolating material, in particular a plastic material, thereby electrically isolating the electric motor from the magnetic gear arrangement. - wherein the electric motor is a brushless motor, - wherein the electric motor comprises - a stator with a first number of electric windings in the form of wire coils disposed circumferentially around a longitudinal axis of the electric machine and - a rotor with a second number of permanent magnets of alternating polarities rotatable in respect to the stator about the longitudinal axis during operation of the electric motor, - a stator with a first number of electric windings in the form of wire coils disposed circumferentially around a longitudinal axis of the electric machine and - a rotor with a second number of permanent magnets of alternating polarities rotatable in respect to the stator about the longitudinal axis during operation of the electric motor, - wherein the magnetic gear arrangement is located in a manner displaced along the longitudinal axis in respect to the electric motor, and - wherein the magnetic gear arrangement comprises - a first magnetic element with a third number of permanent magnets, - a second magnetic element with a fourth number of permanent magnets, and - a modulator comprising a fifth number of ferromagnetic elements disposed between the third number of permanent magnets and the fourth number of permanent magnets, wherein the first magnetic element, the second magnetic element and the modulator are rotatable in respect to each other about the longitudinal axis, wherein one of the elements (41, 44) or the modulator is connected to the rotor of the electric motor in a torque proof manner, and wherein another one of the elements (41, 44) or the modulator is connected to an output shaft of the electric machine in a torque proof manner, and - a first magnetic element with a third number of permanent magnets, - a second magnetic element with a fourth number of permanent magnets, and - a modulator comprising a fifth number of ferromagnetic elements disposed between the third number of permanent magnets and the fourth number of permanent magnets, - wherein the electric motor comprises an internal stator and an external rotor rotatable externally around the stator about the longitudinal axis during operation of the electric motor, - a venting element is attached to or forms part of at least one of the rotating parts (34; 41; 44) of the electric machine, - the venting element is located between the external rotor of the electric motor and the first magnetic element of the magnetic gear arrangement, and - the venting element is made of an electrically isolating material, in particular a plastic material, thereby electrically isolating the electric motor from the magnetic gear arrangement.