Continuity mistake: In the opening scenes where he gets his mustang back, he hits the guy who comes over the roof and busts the windshield, but in the very next shot the windshield is pristine. (00:07:45)
Continuity mistake: On the subway while John and Cassian eyeball each other, from the front there's no-one in front of Cassian, just a guy in a hat off to the side. But from the back, another man appears between them.
Suggested correction: You can see the edge of that guy cut off on the edge of the shot he is there, that grey hair and that same jacket.
Continuity mistake: When John enters the Continental with his dog, there is a female bellhop starts walking behind him. However she disappears instantly. (00:26:50)
Continuity mistake: When Santino says he's sorry about John's wife, he's looking at one photo that has got a sparkly frame. When the camera changes, the frame is now wood effect. (00:20:20)
Continuity mistake: Just before John shoots the Russian in his kneecaps, he is thrown flat on the floor. When the camera changes he is sat up. (00:11:40)
Continuity mistake: When walking along the cars at the start, John is level with the first car. Camera changes and now he is level with car 2. (00:06:45)
Continuity mistake: After the motorcyclist crashes into John's car, in the wider shot all John's headlights are on, then as he gets out, all but one are off. (00:02:15)