Other mistake: Watch when two bodyguards shove Mel and Val towards the car at the end of the movie- one of the bodyguards steps on Val's tail and nearly trips.
Other mistake: When Romulus talks to Matthew about Leppenraub he says that he knows "the man he works for". The German subtitles translate into "the man who works for him". (00:16:50)
Other mistake: When Erika peeps at a couple at the drive-in cinema, the man makes eye contact, jumps out of the car, and starts running after her. We see her running away, but the guy never catches her, although she isn't running very fast and didn't have much of a head start. (00:50:40)