Continuity mistake: When Borat wrestles his fat Kazakh friend he is sitting on Borat's face at one point. When he gets up, for a brief moment yellow material is visible between Borat's face and the man's ass, just before it cuts away. (Sacha Baron Cohen supposedly donned a surgical mask when filming the takes for those shots.)
Continuity mistake: When Borat arrives at the airport, he is coming down the escalator and there are several people immediately in front of him. The shot jumps to when he is closer to the bottom, yet the people who were immediately in front of him are not on the escalator nor are they even within the vicinity of the escalator.
Continuity mistake: When Borat is chasing Pamela Anderson and the security chasing Borat, you see a few other people chasing him as well. There is a man in a purple shirt who is carrying a camera, as well as a man in a dark blue sweater. The security guards push the man in the dark blue sweater out of the way just before they reach Borat, yet one scene later the man still catches Borat before security does. (01:16:30 - 01:17:10)