Screenwriter Matt Holloway is a fan of Downton Abbey (2010), and jokingly said that Jim Carter (who played the butler Mr. Carson on the show) should voice Cogman. He was shocked when Executive Producer and Director Michael Bay got Carter signed on as Cogman.
The scenes of Sir Edmund Burton (Sir Anthony Hopkins) visiting 10 Downing Street were filmed at the actual office of the British Prime Minister in October 2016.
The original cut of the movie supposedly was much longer and roughly a whole hour's worth of footage was cut for theatrical release.
Mark Wahlberg announced this will be his last Transformers movie as Cade Yeager. He had signed a contract for three movies, with the knowledge that he could be relieved earlier.
Quintessa's design was based on Alpha Q's design in Transformer: Super Link (2004) (a humanoid upper body with tentacles for legs), and the Quintesson's facial designs in Transformers (1984) (a face with a headdress). The headdress incorporates elements of the Autobot and Decepticon insignias, reflecting her role as the Transformers' creator.