A vehicle body structure includes a body side section (1) configured of a first composite component (10) and a body lower section (2) configured of a second composite component (20). Each of the first and second composite components (10, 20) comprises a metal plate (11, 21) and a fiber reinforced thermoplastic portion (12, 22) that contains discontinuous fibers. The fiber reinforced thermoplastic portion (12) of the first composite component (10) includes a lining layer formed on the metal plate (11) and reinforcing ribs raised from the lining layer. The fiber reinforced thermoplastic portion (22) of the second composite component (20) includes a planar portion (24) infilled in an opening (23) opened on the metal plate 21. The discontinuous fibers in the fiber reinforced thermoplastic portion (22) of the second composite component (20) are longer than the discontinuous fibers in the fiber reinforced thermoplastic portion (12) of the first composite component (10).