The present invention relates to a vehicle-associated device with an operating unit by means of which at least alphanumerical characters and/or symbols can be selected and assembled to form a character or function group, and with a display device by means of which, using a display unit 1, selectable characters and/or symbols can be displayed in at least one selection field 2, and selected characters, symbols, a character or function group can be displayed in at least one input field 3, with a storage device with data stored therein, and with a data processing unit for selecting data from data stored in the storage device, on the basis of predeterminable criteria and taking into consideration the characters and/or symbols selected so far by a user, wherein the device is set up in order to display, on the display unit 1, a completion designation 4 in the area of the selection field 2 in the immediate vicinity of a character or symbol selected most recently by a user, to the extent that a possible completion of the character(s) and/or symbol(s) selected so far is determined by the data processing unit on the basis of the data in the storage device and taking into consideration the character(s) and/or symbol(s) selected by a user so far, the completion designation 4 can be selected by a user using the operating unit or a selection designation can be positioned automatically on the completion designation 4, and a displayed completion suggestion can be selected by a user using the operating unit.