Other mistake: As Sam recovers from her injuries, she keeps babying her right arm, when it was her left that Tory scraped with the wrist chain and bandaged.
Suggested correction: It was her right arm that Tory cut.
Audio problem: The man Larusso neglects to sell his dealership to thinks he just got the deal before being punked. He turns around to talk to his assistant but the audio here is off enough to be noticeable. His mouth doesn't match briefly.
Revealing mistake: When Daniel (Macchio) sees Kumiko (Tomita) dancing in Tomi Village Green, several U.S. service members are watching. Close inspection reveals they are wearing no nametapes, rank, or branch tapes on their uniforms. All that is visible is the bare Velcro sections.
Other mistake: Johnny is browsing Facebook and accepts a friend request for his childhood crush and checks out her profile. The Facebook post on Ali Mille Schwarber's profile with a photo of her smiling has a lock icon next to the date. This indicates that the photo/post is private and no-one should be able to see it except for Ali. (00:36:58)
King Cobra - S3-E6
Factual error: Flashback when Kreese is in Vietnam. His captain, as well as other officers at their base camp were wearing modern uniforms, wrong for the time. (00:01:05 - 00:01:29)
King Cobra - S3-E6
Continuity mistake: When Miguel realises Johnny liked all Ali's photos, he looks embarrassed and shakes his head to the right, with his mouth open. In the next frame he looks significantly different, with his mouth shut. (00:09:23)
Obstáculos - S3-E7
Continuity mistake: When Daniel and Sam are fishing, the way that Sam holds her fishing pole changes between shots.
Obstáculos - S3-E7
Continuity mistake: During the dream fight scene, Tory kicks Sam onto a platform. In the wide shot, Sam turns to the left after getting kicked. In the closeup, she's turned to the right.
The Good, The Bad, and the Badass - S3-E8
Continuity mistake: In the beginning of the episode when Daniel and Johnny try to pick up Robby from juvie, the background shows that the weather changes in an instant. When they're arguing, it's raining. When Robby refuses their help, it's sunny.
The Good, The Bad, and the Badass - S3-E8
Continuity mistake: When Sam and Miguel are "fight flirting", Robby has his right arm around Sam and his left hand is touching her. In the next shot, his hand is no longer touching her.
December 19 - S3-E10
Revealing mistake: While Kreese is fighting Johnny, the stunt double is clear in several shots.
December 19 - S3-E10
Continuity mistake: After Johnny picks up the small spear in the dojo, the first spear (next to the one picked up) changes angles (tilting positions) every time it's shown during the scene.
December 19 - S3-E10
Continuity mistake: At one point during the first meeting of Vanessa and Ali, Vanessa is using a straw to play around with her martini glass. In the next shot, the straw disappears.
December 19 - S3-E10
Continuity mistake: Tory's hair looks disheveled at the start of the house brawl. When she shouts "No Mercy!", her hair looks better. The intro must have been filmed after the brawl.
December 19 - S3-E10
Continuity mistake: When Ali dishes about Johnny and Daniel's high school rivalry, she holds her wine glass in one shot but not in the next. It's noticeable even when the camera is not on her.
December 19 - S3-E10
Continuity mistake: When Ali dishes about Johnny and Daniel's high school rivalry, she is sometimes moving just one hand in one shot then it's both hands in the next shot.