Egon discovers a portrait of Adolf Hitler in the Nazi bunker. In the dubbed version by DEFA in East Germany, this shot was cut out. (It is only visible in the 2005 DVD edition by ZYX, which used the restored Danish footage.)
Rico's Porsche should be destroyed in Betterøv's scrap metal press. However, the filmmakers did not want to scrap such an expensive car, so they used a VW Beetle which was painted in the same yellow tone.
During the time of filming in Jutland, Poul Bundgaard had a theatre commitment in Copenhagen, so he was flown to the capital in a private plane every afternoon and back to Thisted Airport at night.
This is the first of only four Olsen Gang films that start directly with Egon being released from Vridsløselille State Prison, without any other prologue (not counting The Olsen Gang Long Gone (1981), which uses footage from the previous film as a flashback).
Ove Verner Hansen was originally in the movie, but when Karl Stegger got sick the script had to be changed.