A drive mechanism for a vehicle seat track assembly includes a housing and a motor having an output shaft. An output speed reducing mechanism is coupled to the output shaft. The motor and the output speed reducing mechanism are mounted to the housing. A toothed drive pulley is rotatably mounted to the housing and coupled to the output speed reducing mechanism. A first toothed pulley is rotatably mounted at a first end of the housing. A second toothed pulley is rotatably mounted at a second end of the housing. A continuous toothed belt is rotated by the toothed drive pulley and causes rotation of the first and second toothed pulleys.