: Mila Kunis, who plays Audrey, was born in Chernivtsi, Ukraine. During a scene where her co-star Kate McKinnon meets a Ukrainian character and asks about the country’s name, Kunis was actually the expert on set who could verify the cultural accuracy of the dialogue.

: Almost every European location featured in the film—including Lithuania, Prague, Paris, and Vienna—was actually filmed in and around Budapest, Hungary .

Despite the story traveling across multiple European cities like Vienna, Prague, and Berlin, the production utilized creative filming techniques to manage its "globetrotting" feel:

: A highlight scene where the characters struggle to drive a manual car was actually highly technical; it required complex cables and rigs that were digitally removed in post-production to make the car appear to move slowly and awkwardly. The Spy Who Dumped Me (2018) - Filming & production - IMDb

One of the most notable features of the film is its deep, real-world connection to lead actress Mila Kunis: