Audio problem: Right after Bert kills the second graboid he gets on the radio and says "we killed that mother-humper". Val replies "...be advised there are two more mother-humpers". However Val's lips don't seem to be saying "humper". This occurs even in unedited versions of the film. (01:01:40)
Audio problem: In the opening scene when the band Black Plague is performing, the audio is out of sync and the drums aren't playing what they should be. When playing the cowbell the drummer is hitting the hi-hat, and so on. Also when hitting the snare it's out of sync, Bobby Black is also missing some notes. And when the backing vocals are heard no-one is singing. (00:01:45)
Audio problem: At the climax of the film when the Turtles are about to face Shredder for the first time, Raphael says, "I got him" and then runs to fight. When Raphael falls to the ground, his pair of Sai hit the ground but make no noise. There should be a metallic sound against the rooftop. (01:19:00)
Audio problem: At the end of the movie, Carl is chasing Molly and Oda Mae. He says something like "Molly she's a thief!" and something else, but his lips don't move.
Audio problem: When Kevin is going through Buzz's private things he finds a picture of his girlfriend. Sickened by her appearance, he smashes the picture. But the smashing sound starts before he hits it. (00:22:05)
Audio problem: Throughout the final sequence, when Harry and Nora are in the jeep and being chased by the police cars onto the field by the gym, many of the words Harry says are out of sync with his mouth.
Audio problem: In the scene where Kid N Play are freestyle battling, you hear mixing in the background. But Bilal is not mixing, but in fact watching Kid N Play.
Audio problem: In the shower scene, one of the girls says "today is my birthday" but her lips say "tomorrow is my birthday". This is also noteworthy because other circumstantial evidence suggests that an extra day has been edited out of the film.
Audio problem: When the very first song ends during the Festival scene, keep an eye on the guitarist to the right. His hand is still moving but no sound is coming out of his guitar. (00:56:55)
Audio problem: When the professor is walking out toward the car after Bobby yells at his house, Bobby says, "You're joking with me," but if you watch his mouth, you can tell that he really said, "You're f - -ing with me." The original line was probably cut during editing to keep the PG-13 rating, but it's still a problem.
Audio problem: In the beginning, Estevez carelessly chucks an emptied trash can off camera and it never makes a sound to signify that it landed.
Audio problem: When Junior picks up the cat and it starts to hiss you can see that the cat's mouth isn't moving.
Audio problem: Right after the doctor falls in the basement he is talking about how no spiders are going to be there. Then he keeps repeating "Oh s***" but it looks like his lips are delayed.
Audio problem: In the final scene where Scrooge chases Dijon out of his money bin, Scrooge shouts, "I'll change your face, you thief," but his mouth isn't even open. (01:09:10)
Audio problem: Three quarters into the movie, the girls have some wine, and little Kate overindulges. In the next take we hear belching and hiccups that don't match the girls sitting quietly on the porch swing, talking.