Audio problem: During the chase at the end of the movie, the police cars' tires squeal in the dirt.
Audio problem: The pitch of an airliner's engine doesn't change dramatically when going through rough turbulence. In the scene with the turbulence - after all is quiet, it almost sounds as if the engines are shut down. And it happens way to fast for it to be the pilots doing it. And why would the pilots speed up when entering turbulence?
Audio problem: In the scene in the shower when Vesper says that she feels she has blood on her hands that won't come off, her mouth says "hold me" but she actually says something different. Also she says "please" but nothing is heard.
Audio problem: When Steve is thanking Melissa for marrying Mark, the bride turns out to be Angela. Angela knocks Steve to the floor and grabs a gun from under her wedding dress. You can hear the sound of a hammer cocking but the gun turns out to be a hammerless automatic.
Audio problem: In the scene where all the towns residents take refuge in the Prosperity Mall, the mall's janitor/caretaker guy says something to the female sheriff with the camera facing him. In mid sentence the camera angle changes to behind the janitor but at an angle - you can hear him keep on talking but you can see that his jaw is perfectly still meaning that he can't possibly be talking. (01:11:25)
Audio problem: When the Statue of Liberty's head strikes the top of a distant building before landing in the street, sight and sound are simultaneous. There should have been an audible lag in the sound due to the speed of sound being only about 1000 feet per second. The absence of this lag would be acceptable in most movies but is inconsistent with the amateur home movie theme of Cloverfield.
Audio problem: In the scene where Kalgan confronts third engineer Steve Godell on the catwalk, he laughs before saying the line: "third engineer Steve Godell?" The laugh begins while Kalgan is obscured by the set, and continues as he moves into the scene. As he steps from around the corner, you can see his mouth is closed and not moving at all, despite the fact that his laugh can still be heard for 3-4 seconds.
Audio problem: Just after Arnie accepts the cab driver's offer and the other one complains, Arnie's driver gives him the finger and says something like, "Eat this", but his lips don't match what he's saying. (00:52:45)
Audio problem: Before the trio crashed into the Daily Planet (just before the battle with Supes), they were heard flying outside the building. For 3 superbeings with the ability to fly unaided, they sure sound heckuva lot like jet-propelled aircrafts. Jet aircrafts are noisy because of their engines, but superpeople?
Audio problem: In the scenes aboard the train, you can hear the railroad crossing signal. But in the scene there is no road or highway crossing the tracks, only forest or open field. This happens al least 8 times along the film.