Factual error: The bad guys attach over a pound of Semtex to the hull of the First Lady's yacht. When it explodes, the blast shatters the windows in a house a mile away, yet apparently doesn't impact the hull. Even as the vessel burns for 5 minutes, there is no discernible list.
Continuity mistake: In the opening battle sequence, Cobra Commander takes a bomb and sets it for 3:00 minutes. As he flies with his jet pack to the Statue of Liberty, it counts down to 2:58. He lands and places the bomb, and laser blasts hit all around him before he turns and flies off. This takes about 5 seconds to do, but the timer on the bomb stays at 2:58 for the full time of him landing, placing the bomb, and flying away. (00:01:35)
Continuity mistake: Near the beginning of the film, the soldiers are filling sand bags with mud. Beletsky, whose hands and forearms are covered in wet mud, puts down his sandbag and takes out a photo of his girlfriend. In the next closeup shot of him holding the photo, his hands are suddenly clean and dry. (00:11:00)
Continuity mistake: The purple Chevy Impala rams the net White Zac was climbing. The net falls all over the car and starts covering the kid too, but in the next shot he is on top of the net. (00:10:30)
Continuity mistake: When Tiger kicks the trunk, making it slide across the floor toward Dragon, the trunk hits the door and comes to a complete stop while the door opens. In the next shot the trunk has suddenly moved about 6 inches in the door opening. (00:29:40)
Other mistake: When the skater is run over he's covered in blood before the car hits him.
Revealing mistake: Terri is replaced by a stuntman in a dark blond wig once she puts on her motorcycle helmet outside the hardware store.
Revealing mistake: When Frank Bauggs is falling from the building, he is a very obvious dummy. His body limps around too much. (00:50:45)
Factual error: In the farmhouse bedroom scene, the lead character wakes up and a close up shot of the alarm clock shows it is 5AM. Full sunlight is coming through the window, and an exterior shot shows the sun shining on the house and hay bales. The narrative lead-in just explained that it is early October on a farm near Dallas, Texas. The earliest sunrise occurs near Dallas in October is 6:40AM. (00:04:00)
Revealing mistake: A bunch of seedy individuals are gathered, weapons in hand. Unbeknownst to them, though, deadly ninjas are creeping by, with all the speed of fast-forwarded footage. The problem, besides how obvious the trick is, is that it also features a visible jump cut; you can see the foliage change position literally from one frame to the other during the same shot. (00:01:30)