A mounting element (1) for vehicle-side assembly of an airbag module (100) is suggested with at least one mounting plate (3) adapted to be mounted on the vehicle side which in its plate plane (E) can be non-rotatably coupled to an airbag (2), wherein the mounting plate (3) includes an extension (4) through which the mounting element (1) can be fixed, perpendicularly to the plate plane (E), non-rotatably to the airbag (2) or to a retaining element (9) maintaining the latter in its folded state. Furthermore, an airbag module (100) is suggested with an airbag (2), an inflator for providing inflating gas for the airbag (2) and at least one mounting element (1) according to the invention. Furthermore, a vehicle occupant restraint system is suggested comprising the airbag module (100) as well as comprising at least one sensor unit for detecting circumstances which trigger a case of activation of the inflator and comprising an electronic computing unit for defining the case of activation based on the circumstances detected by the sensor unit.