A drive system for a motor vehicle door is provided including an electric motor and a hinge for fastening the motor vehicle door. The hinge includes a door leaf, a body leaf for attachment to the body and a hinge pin arranged coaxially to the hinge axis and rotatably mounted on the body leaf. The electric motor includes a stator and a rotor arranged coaxially with the hinge axis in the stator and mounted rotatably about the hinge axis relative to the stator. The hinge pin is disposed in sections within the rotor, the rotor being coupled to the hinge pin in a gearless manner to transmit rotation. The drive system includes a tolerance ring arranged between the rotor and the hinge pin for transmitting the rotation from the rotor to the hinge pin, wherein the tolerance ring is coupled frictionally to the hinge pin or to the rotor.