A motor drive unit for a vehicle door, the motor drive unit comprising: a motor having a driving member comprising a worm gear; a motor drive unit housing having a first shaft rotatably received therein; an input gear being rotatably received upon the first shaft, the input gear being operatively associated with the driving member such that rotation of the driving member causes rotation of the input gear; a second shaft comprising a first gear and a second gear, the second gear directly engages the input gear and the first gear is directly driven by the worm gear of the motor; an output member fixedly secured to the first shaft; an electromagnetic clutch, comprising: i) an armature mounted on the input member; ii) a rotor fixedly secured to the first shaft, the rotor being cylindrical in shape and has a plurality of teeth positioned along the periphery of the rotor, the teeth being positioned in an equidistant manner; iii) a coil mounted to the motor drive unit housing, the coil providing magnetic flux lines through the rotor to attract the armature when the coil is energized thereby coupling the input member to the rotor, wherein the magnetic flux lines travel through a portion of the rotor and the armature but not through the plurality of teeth of the rotor, wherein rotation of the output member by a force other than the motor will cause rotation of the first shaft and the rotor when the coil is not energized; the motor drive unit further comprising: an inductance sensor assembly mounted to the motor drive unit housing in a facing spaced relationship with respect to the plurality of teeth of the rotor, wherein rotational speed and direction of the rotor is detected by the inductance sensor assembly as the plurality of teeth of the rotor pass by the inductance sensor assembly; and wherein the worm gear of the motor is centrally located within a height profile of the motor drive unit, the height profile being a distance between the top of the output member including any covering and an opposite wall of the motor drive unit housing proximate to an opposite end of the first shaft. a motor having a driving member comprising a worm gear; a motor drive unit housing having a first shaft rotatably received therein; an input gear being rotatably received upon the first shaft, the input gear being operatively associated with the driving member such that rotation of the driving member causes rotation of the input gear; a second shaft comprising a first gear and a second gear, the second gear directly engages the input gear and the first gear is directly driven by the worm gear of the motor; an output member fixedly secured to the first shaft; an electromagnetic clutch, comprising: i) an armature mounted on the input member; ii) a rotor fixedly secured to the first shaft, the rotor being cylindrical in shape and has a plurality of teeth positioned along the periphery of the rotor, the teeth being positioned in an equidistant manner; iii) a coil mounted to the motor drive unit housing, the coil providing magnetic flux lines through the rotor to attract the armature when the coil is energized thereby coupling the input member to the rotor, wherein the magnetic flux lines travel through a portion of the rotor and the armature but not through the plurality of teeth of the rotor, i) an armature mounted on the input member; ii) a rotor fixedly secured to the first shaft, the rotor being cylindrical in shape and has a plurality of teeth positioned along the periphery of the rotor, the teeth being positioned in an equidistant manner; iii) a coil mounted to the motor drive unit housing, the coil providing magnetic flux lines through the rotor to attract the armature when the coil is energized thereby coupling the input member to the rotor, wherein the magnetic flux lines travel through a portion of the rotor and the armature but not through the plurality of teeth of the rotor, wherein rotation of the output member by a force other than the motor will cause rotation of the first shaft and the rotor when the coil is not energized; the motor drive unit further comprising: an inductance sensor assembly mounted to the motor drive unit housing in a facing spaced relationship with respect to the plurality of teeth of the rotor, wherein rotational speed and direction of the rotor is detected by the inductance sensor assembly as the plurality of teeth of the rotor pass by the inductance sensor assembly; and wherein the worm gear of the motor is centrally located within a height profile of the motor drive unit, the height profile being a distance between the top of the output member including any covering and an opposite wall of the motor drive unit housing proximate to an opposite end of the first shaft. an inductance sensor assembly mounted to the motor drive unit housing in a facing spaced relationship with respect to the plurality of teeth of the rotor, wherein rotational speed and direction of the rotor is detected by the inductance sensor assembly as the plurality of teeth of the rotor pass by the inductance sensor assembly; and wherein the worm gear of the motor is centrally located within a height profile of the motor drive unit, the height profile being a distance between the top of the output member including any covering and an opposite wall of the motor drive unit housing proximate to an opposite end of the first shaft.