You need the raw data. The only place the Unrated + German combo exists is on the 2004 Region 2 (German) DVD or the rare German Blu-ray release (titled EuroTrip - Heute abgereist wird).
The goal here is to find a way to watch "EuroTrip (2004)" in a manner that supports the creators and adheres to the law.
Downloading movies, especially those described as "unrated" and potentially containing dual audio tracks, can lead to legal consequences. Movies are copyrighted material, and distributing or downloading them without permission is illegal in most countries. This applies to TV shows, movies, and music.
Copyright laws vary by country but generally, copyright holders have exclusive rights to reproduce, distribute, and display the work publicly, as well as create derivative works. Downloading copyrighted material without permission infringes on these rights.
If you have the disc, use MakeMKV. It’s free. It will find both the English and German audio tracks automatically. This gives you a perfect, "working" mkv file.
"EuroTrip" is a comedy film directed by Steve Rash and written by Luke Green and Matt Avedon. It was released in 2004 and serves as a spin-off to the MTV reality show "The Real World." The film stars many of the same cast members from various seasons of "The Real World," including:
The plot follows Steve (played by Colin Treadwell), who reunites his friends from "The Real World" in Europe for a trip that becomes a disaster.