An operating liquid tank for a motor vehicle, comprising a tank wall enclosing a tank volume that can be filled with an operating liquid, a filling arrangement designed for introducing operating liquid into the tank volume, and a removal arrangement designed for the removal of operating liquid from the tank volume, wherein the removal arrangement comprises a pump assembly with a pump and a pump drive, the pump assembly comprises at least two assembly components that are formed separately from one another and are or can be coupled magnetically to one another, and of which a first assembly component as drive component comprises at least one part of the pump drive and a second assembly component as conveying component comprises a conveying part of the pump that can be driven by the pump drive relative to a conveying component housing for movement, wherein the tank wall extends between the drive component and the conveying component and physically separates the conveying component located on the inner face of the tank wall from the drive component located on the outer face of the tank wall.