Abstract: A vehicle side portion structure includes a cross member extended along a vehicle width direction, a pillar that extends along a vertical direction at an end, in a vehicle width direction, of a vehicle, and a gusset for connecting an end portion, in the vehicle width direction, of the cross member to the pillar. The gusset includes a plate portion whose inner end portion in the vehicle width direction is fastened to the cross member, the plate portion being extended from a region including a position fastened to the cross member toward a pillar side and having a region upwardly inclined toward outside in the vehicle width direction until the plate portion reaches in a region on the pillar side to a pillar side end, and a flange joined to the pillar side end of the plate portion and fastened to the pillar. A fastening position of the flange and the pillar is located upward of a fastening position of the inner end portion, in the vehicle width direction, of the gusset and the cross member.

Abstract: A vehicle side portion structure includes a cross member extended along a vehicle width direction, a pillar that extends along a vertical direction at an end, in a vehicle width direction, of a vehicle, and a gusset for connecting an end portion, in the vehicle width direction, of the cross member to the pillar. The gusset includes a plate portion whose inner end portion in the vehicle width direction is fastened to the cross member, the plate portion being extended from a region including a position fastened to the cross member toward a pillar side and having a region upwardly inclined toward outside in the vehicle width direction until the plate portion reaches in a region on the pillar side to a pillar side end, and a flange joined to the pillar side end of the plate portion and fastened to the pillar. A fastening position of the flange and the pillar is located upward of a fastening position of the inner end portion, in the vehicle width direction, of the gusset and the cross member.