Adjustable stopper device for a vehicle door or hood, comprising - a base part, - an adjustment part, wherein the adjustment part is connected to the base part via threads (120, 220) and thereby rotatable around a device axis with respect to the base part, - a stopper part configured to contact the vehicle door and to provide an abutment surface for the vehicle door when the vehicle door is closed, wherein the stopper part is connected to the adjustment part and wherein the axial position of the abutment surface is adjustable by turning the adjustment part with respect to the base part around the device axis, wherein the stopper part comprises a central opening into which a tool can be inserted for engagement with the adjustment part, in order to rotate the adjustment part, - a fastening structure for fastening the base part to the car body, wherein the fastening structure comprises one or more expansion and/or hook elements (411, 412, 421, 422, 150), - wherein a subset or the entirety of the one or more expansion and/or hook elements (411, 412, 421, 422) is configured to be brought into a fastening position with respect to a corresponding opening or corresponding openings of the car body, wherein, when the subset or the entirety is introduced into the opening or openings and is in the fastening position, the base part is fastened to the car body, - wherein the subset or the entirety is configured to be brought back, when the base part is fastened to the car body, into a release position with respect to the opening or openings of the car body, wherein with the subset or the entirety being in the release position, the base part can be removed from the car body, and wherein the subset or the entirety of the one or more expansion and/or hook elements (411, 412, 421, 422) are part of one or more clip components which is clipped or clippable onto the base part, - wherein the subset or the entirety of the one or more expansion and/or hook elements (411, 412, 421, 422) comprise a distal portion (411.1) having a first inclination with respect to the insertion direction, a proximal portion (411.2) having second inclination opposite to the first inclination and in between an edge (411.3), such that by pulling on the device when its fastened to the car body in a direction opposite to the insertion direction, the subset or the entirety are brought into the release position and further pulling allows to remove the device from the car body; and - wherein the proximal end point (411.4) of the proximal portion (411.2) having the second inclination is radially fixed with respect to the device. - a base part, - an adjustment part, wherein the adjustment part is connected to the base part via threads (120, 220) and thereby rotatable around a device axis with respect to the base part, - a stopper part configured to contact the vehicle door and to provide an abutment surface for the vehicle door when the vehicle door is closed, wherein the stopper part is connected to the adjustment part and wherein the axial position of the abutment surface is adjustable by turning the adjustment part with respect to the base part around the device axis, wherein the stopper part comprises a central opening into which a tool can be inserted for engagement with the adjustment part, in order to rotate the adjustment part, - a fastening structure for fastening the base part to the car body, wherein the fastening structure comprises one or more expansion and/or hook elements (411, 412, 421, 422, 150), - wherein a subset or the entirety of the one or more expansion and/or hook elements (411, 412, 421, 422) is configured to be brought into a fastening position with respect to a corresponding opening or corresponding openings of the car body, wherein, when the subset or the entirety is introduced into the opening or openings and is in the fastening position, the base part is fastened to the car body, - wherein the subset or the entirety is configured to be brought back, when the base part is fastened to the car body, into a release position with respect to the opening or openings of the car body, wherein with the subset or the entirety being in the release position, the base part can be removed from the car body, and - wherein the subset or the entirety of the one or more expansion and/or hook elements (411, 412, 421, 422) comprise a distal portion (411.1) having a first inclination with respect to the insertion direction, a proximal portion (411.2) having second inclination opposite to the first inclination and in between an edge (411.3), such that by pulling on the device when its fastened to the car body in a direction opposite to the insertion direction, the subset or the entirety are brought into the release position and further pulling allows to remove the device from the car body; and - wherein the proximal end point (411.4) of the proximal portion (411.2) having the second inclination is radially fixed with respect to the device.