A vehicle lower portion structure is provided with electromagnetic wave emitting components (20, 22, 24) that are disposed at a rear surface side of a floor panel (16) provided in a lower portion of a vehicle (12), and a carpet component (30) that has a backing layer (34) in which is dispersed a magnetic material (Mp), and a carpet pile (32) that is provided on a front surface side of the backing layer (34), and that is disposed at a front surface side of the floor panel (16).
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