Method of manufacturing a motor vehicle piece reinforced thermoplastic

- A method of manufacturing a workpiece (1) of a motor vehicle, in which firstly performs said part (1) by molding thermoplastic material (MTP) charged, characterized in that it then reinforces said workpiece (1 ) thus molded by positioning locally and said workpiece surface (1) at least one reinforcing element comprising strips (2) of fibers (3) continuous unidirectional, and that is not continuously deposited bands (2) on said workpiece (1) in at least one zone (4) of stress concentration.