Provided are a vehicle body and a vehicle. The vehicle body includes: two A pillars; a front impact beam; two front longitudinal beams having front ends connected to the front impact beam, and each of the front longitudinal beams being connected to the A-pillar at the same side therewith by means of a plurality of force transmission paths; a dash panel having lower portion provided with a dash centre aisle and connected to the two A-pillars; an dash upper cross member provided at an upper portion of the dash panel; a dash lower vertical member having an upper end connected to the dash upper cross member and a lower end extending to the dash centre aisle; and two front floor longitudinal beams.

A lower vehicle-body structure allows miniaturization of an undercover and prevents an increase in minimum ground clearance. In the lower vehicle-body structure, a vehicle body floor includes step-up portions connected to a floor tunnel on opposite sides of the floor tunnel in a vehicle width direction at least in regions where first and second cross members are disposed on the vehicle body floor. The lower vehicle-body structure includes a mount member that faces the floor tunnel and connects the step-up portions on the opposite sides of the floor tunnel, and includes first and second undercovers that cover a lower side of the mount member so as to be continuous with a bottom surface of the vehicle body floor on outer sides of the step-up portions in the vehicle width direction.

A vehicle body structure includes a dash panel separating a vehicle front part from a vehicle cabin, a front side member extending longitudinally of a vehicle body in the vehicle front part and having ends located rearward of the vehicle body, opposite to the dash panel, a floor frame member forming a floor frame of the vehicle cabin, and a plate-shape reinforcing member disposed further toward a center of the vehicle cabin with respect to the dash panel and the floor frame member to be opposite to the ends of the front side member. The reinforcing member includes an upper portion secured to the dash panel and a lower portion secured to the floor frame member, and has a curvature that is smaller than a curvature of the dash panel.

An object of the present invention is to provide a vehicle body floor structure capable of effectively preventing deformation of a floor panel by increasing bending strength of the floor panel even when an upper reinforcing member of the floor panel is removed. A vehicle body floor structure of the present invention includes a dash cross member disposed along a kick-up portion on a lower surface side of a floor panel, a novel front side frame having an outer frame and an inner frame at a rear portion of a side frame body, and a floor panel on which beads are formed to form a closed cross-section in cooperation with the outer frame and the inner frame.

A vehicle front portion structure includes: a framework member in a gutter shape provided in a vehicle length direction from a front box to a cabin and having a side wall; and a dash lower panel that includes a gutter section having a side wall and fitted into an inside of the framework member and in which the side wall of the gutter section and the side wall of the framework member are joined together.

On a side face of a floor tunnel, a side reinforcement is disposed between an upper edge of the side face and a connected region at which a dash cross member is connected to the floor tunnel. An upper reinforcement extends in a longitudinal direction at an upper portion of the floor tunnel. The side reinforcement extends rearward with its rear edge inclining upward. A collision load input from a side member enters the side face of the floor tunnel via the dash cross member. The collision load is, then, transmitted to the upper reinforcement through the floor tunnel along the rear edge of the side reinforcement.

Provided is a vehicle body front structure capable of ensuring both driver visibility and collision performance. This vehicle body front structure comprises: a front pillar which has an A-pillar, an A-pillar located behind the A-pillar, and a lower frame portion connecting the lower ends of the A-pillar and A-pillar; and a top-side upper member which is disposed above a wheelhouse and connected to a lower-frame-portion upper member connecting portion. Ridge lines are formed across the upper member connecting portion, the lower frame portion, and the A-pillar.

A stiffening element to protect against a side or frontal impact for an electric vehicle includes a first longitudinal support beam and a second longitudinal support beam. A trunk of the electric vehicle is positioned between the first longitudinal support beam and the second longitudinal support beam. The trunk is positioned between a front bumper and a firewall of the electric vehicle. The trunk includes a trunk base forming a floor of the trunk. The trunk base includes one or more stiffening elements positioned across one or both of a width or length of the trunk base.

A method for manufacturing a central underbody portion of a structural body of a motor vehicle to delimit a bottom of a passenger compartment of the vehicle. The method includes assembling a floor of the central underbody portion, attaching an integral central profile to the floor, arranged in a longitudinal direction of the vehicle and having a length dependent on a length of the central underbody portion in the longitudinal direction, and assembling at least one end piece forming an extension of the central profile. The end piece has an interface providing a connection and a function of absorbing and transmitting forces with a structural portion of the body that is separate from the central underbody portion and/or with the floor. The attaching includes adapting the length of the central profile as a function of the length of the central underbody portion in the longitudinal direction.

A floor brace has an upper end joined to a rear end of a cowl-to brace, is placed to incline toward a rear side of a vehicle, from the upper end toward a lower end, and has the lower end joined to a side wall of a floor tunnel. The rear end of the cowl-to brace and the upper end of the floor brace include overlap portions which overlap each other in a front-and-rear direction of the vehicle. A first bolt joint portion and a second bolt joint portion which are bolt-joined in a width direction of the vehicle are formed on each of the overlap portions of the cowl-to brace and the floor brace. A fragile portion that crosses between the first bolt joint portion and the second bolt joint portion is formed on one of the overlap portions of the cowl-to brace and the floor brace.