A motorized utility cart assembly includes a cart that has a bottom platform and a top platform. A drive unit is attached to the bottom platform of the cart and the drive unit includes a pair of drive wheels. Each of the drive wheels is urged to rotate in a first direction when the drive unit is turned on thereby facilitating the cart to travel forwardly to transport cargo on the cart without requiring the user to push the cart. A control unit is integrated into the cart and the control unit is in communication with the drive unit. The control unit includes a throttle which actuates the drive unit to a speed corresponding to a level of engagement of the throttle between a minimum speed and a maximum speed.