Liquid container, especially a urea solution container, for a motor vehicle

A liquid container for a motor vehicle, especially a urea solution container, comprising, as a container component, a tank surrounding an uptake volume and, as an additional container component, a filling line which connects, in flow-mechanical terms, an insertion site situated outside the tank at a distance from same with the uptake volume, wherein at least a main section of the tank and at least a main section of the filling line are configured to be rigid so that they, when the liquid container is used as directed, essentially do not deform, wherein on the tank at least one auxiliary tank body is formed or is able to be formed by increasing the pressure in the interior of the liquid container, said at least one auxiliary tank body increasing the uptake volume, and/or wherein on the filling line at least one auxiliary filling line body is formed or is able to be formed by increasing the pressure in the interior of the liquid container, said at least one auxiliary filling line body increasing the filling line volume surrounded by the filling line.