Underbody structure of a motor vehicle and method for guiding a wind

摘要

A baffle 8 includes a bump portion 82 projecting downwardly including a slant surface portion 83 inclined obliquely backward and downward, and a vertical wall portion 81 provided behind the bump portion to extend in a vehicle width direction , A lower end portion of the vertical wall portion 81 is positioned at a lower level than a rear end portion of the slope surface portion 83. The lower end portion of a part of the vertical wall portion (81A) located inwardly of the other part of the vertical wall portion (81B) arranged to overlap the front wheel 1 in a front view is at a higher level than the lower end portion the other part of the vertical wall portion (81B) which is arranged to overlap the front wheel 1 in the front view.