Continuity mistake: When Lucy comes home at the beginning of the movie she quickly buttons the top of her dress. While eating dinner, it is open and then buttoned again between shots.
Other mistake: When priest is getting ready to leave the city we see him wrapping his hands in his black shirt but moments later when he pulls up his hood his hands are bare.
Other mistake: When Priest forsakes the church rides across the plains on a 'motorbike' the speedo shows him reaching 150 mph, and then even 250 mph. However, in any shot of him riding he can't be going any faster than 70-75 mph.
Continuity mistake: On the train, Black Hat is nearing in to bite Lucy, but is interrupted before he can. However, once they pan back to Black Hat, blood is dripping from his mouth as if he had bitten her.
Continuity mistake: In the scene right after Maggie Q sets the explosive on the tracks, her bike is not more than 5 to 10 feet from the track. The next scene as the raiders are riding down on her she is about 75 feet to the right of the track and her bike is now 30 to 40 ft from the track. During the fight she doesn't really move in any direction very far, and all attacks are parallel to the tracks. Yet somehow someone lands and breaks the trigger mechanism and her bike is right back next to the tracks. (01:07:00 - 01:08:15)
Continuity mistake: After pinning Priest to the train wall with the dagger, Black Hat throws a lit lantern directly in front of him, starting a small fire in addition to the one already raging through the train cart. The flames are so close they lick Priest's boots and clothes. But moments later, when Priest frees himself from the wall, the floor beneath him is bare, with no sign of the broken lantern or of the small fire.
Continuity mistake: On the train, Black Hat brings a plate of food to Lucy and pours her a glass of wine. The amount of wine increases between shots.
Continuity mistake: Priest goes to visit his injured brother. Owen's left hand is either resting on the blanket or above it on his top. (00:21:35)
