A motor vehicle door hinge, having a pillar fitting able to be mounted on a vehicle body, and a door fitting able to be mounted on a motor vehicle door, which are connected to each other in an articulated manner by a hinge pin connected to either the pillar fitting or the door fitting in a rotation-resistant manner and to the remaining one of the pillar fitting or the door fitting in an articulated manner, and an arresting unit having a detent body carrier connected to the hinge pin in a rotation-resistant manner and radially extending to the latter and having a detent body, and a detent element adjustable on the other one of the pillar fitting or the door fitting with respect to the detent body carrier, coaxially arranged with respect to the hinge pin axis and in engagement with the detent body and including at least one detent notch, and arranged within a housing surrounding the hinge pin and the detent body carrier.