Interior trim part of a motor vehicle, such as a loudspeaker cover, air outlet cover or instrument panel, made of an expanded metal 10, wherein the expanded metal 10 is generated by repeatedly sinking a knife provided with teeth into a metal sheet that is guided through an expansion device in a feeding direction V, - having a plurality of meshes 11, - the meshes 11 comprise links 13 that enclose the mesh openings 12, wherein - the links 13 enclosing the mesh openings 12 are interconnected with one another in knots 14, wherein - each mesh 11 has a mesh opening length OL as seen in the feeding direction V that is measured along a line running from knot midpoint to knot midpoint of two knots 14 opposite one another in the feeding direction V, - each mesh 11 has a mesh opening width OB as seen transversely to the feeding direction V that is measured along a line running from knot midpoint to knot midpoint of two knots 14 located opposite one another transversely to the feeding direction V, - the meshes 11 are arranged next to each other in rows R transversely to the feeding direction and one behind the other in columns B in parallel to the feeding direction, characterised in that - over at least a partial length of the interior trim part, the mesh opening length OL exhibits a continuous change of dimension from row R to row R of meshes 11 arranged one behind the other in columns B, wherein the mesh opening length OL in rows R of meshes 11 arranged next to one another is constant and - over at least a partial length of the internal trim part, the mesh opening width OB of meshes 11 arranged one behind the other in columns B exhibits a continuous change of dimension from row R to row R, wherein the mesh opening width OB of meshes 11 arranged next to one another in rows R is constant, - the differences in dimension in the mesh opening width OB and the mesh opening length OL are measured in such a way from row R to row R that the optical impression of continuously changing mesh opening dimensions OL, OB is evoked. - having a plurality of meshes 11, - the meshes 11 comprise links 13 that enclose the mesh openings 12, wherein - the links 13 enclosing the mesh openings 12 are interconnected with one another in knots 14, wherein - each mesh 11 has a mesh opening length OL as seen in the feeding direction V that is measured along a line running from knot midpoint to knot midpoint of two knots 14 opposite one another in the feeding direction V, - each mesh 11 has a mesh opening width OB as seen transversely to the feeding direction V that is measured along a line running from knot midpoint to knot midpoint of two knots 14 located opposite one another transversely to the feeding direction V, - the meshes 11 are arranged next to each other in rows R transversely to the feeding direction and one behind the other in columns B in parallel to the feeding direction, - over at least a partial length of the interior trim part, the mesh opening length OL exhibits a continuous change of dimension from row R to row R of meshes 11 arranged one behind the other in columns B, wherein the mesh opening length OL in rows R of meshes 11 arranged next to one another is constant and - over at least a partial length of the internal trim part, the mesh opening width OB of meshes 11 arranged one behind the other in columns B exhibits a continuous change of dimension from row R to row R, wherein the mesh opening width OB of meshes 11 arranged next to one another in rows R is constant, - the differences in dimension in the mesh opening width OB and the mesh opening length OL are measured in such a way from row R to row R that the optical impression of continuously changing mesh opening dimensions OL, OB is evoked.