Stiffening element for a liquid container, liquid container for a motor vehicle with a stiffening element and production method for a liquid container having a stiffening element

The invention relates to a stiffening element for a liquid container for a motor vehicle and to a liquid container comprising such a stiffening element, wherein the stiffening element has a first connection area, a second connection area and a central area, wherein the first connection area and the second connection area are at least indirectly connected to one another by the central area, and wherein the first connection area and the second connection area have a different connection geometry. Furthermore, the invention relates to a method for the production of such a liquid container.