Continuity mistake: When Spartan is initially frozen in the cyro-liquid, air bubbles and ripples are in the ice around his mouth. Any following shot of him in the ice block shows no bubbles or ripples. (00:10:15)
Continuity mistake: When Phoenix is fighting the police at the kiosk, he knocks the sunglasses off of one officer, but in the next shot the glasses are back when the cop is knocked out. (00:27:00)
Continuity mistake: When Phoenix is talking to his group, one of the guys says, "You mean, we get to kill John Spartan?" Phoenix says, "Exactly," and you see a shot of more men at the table, including Jesse Ventura laughing. There is a girl on the lap of the guy who asked. In the very next shot that shows Phoenix, she's standing off to the side, a step or two away from the guy that she was sitting on the lap of.
Continuity mistake: In Cockto's office, Phoenix gets up from the chair behind the desk, turning it clockwise to get up. But, when he's at the window, reciting a couple of cities, the chair is turned to squarely face the desk.
Continuity mistake: When the small disk-like objects are placed on Spartan before he gets frozen, the one on his head is right on his temple. But, when it cuts to the future and shows him in the block of ice after an employee wipes the frost off the date display, the disk on his head is more forward, almost above his eye.
Continuity mistake: When Spartan, Huxley, and Garcia get in the car to head to the museum, Spartan sits behind the wheel. In the shot from the front, you can see that the wheel Is open (self-drive mode), but when it shows what he sees, it's closed (auto-drive mode). When he switches with Huxley, you see her sit down from the front, and she grabs the wheel in self-drive mode again.
Continuity mistake: When Spartan is swearing at the verbal morality machine and pulls out several citations at once (the last ones he grabs), an actor and actress standing directly behind him start to walk away and go off screen to the right behind Spartan. The view snaps to Huxley and Garcia, then back to Spartan. When it snaps back to Spartan, the same two are standing directly behind Spartan again and start to walk away to the right again.
Continuity mistake: When Huxley, Spartan and the other guy get in the police car to go to the museum they are all wearing sunglasses. In the very next shot all three are not wearing them.
Continuity mistake: In the opening credits when Spartan is frozen, both hands are up either side of his head. In the very next shot his left hand is by his head, but his right arm is out stretched and in a down position, impossible as he is frozen. Also his mind altering sensors are on the left side of his head and body before freezing, next shot they are on the right side of his body.
Continuity mistake: When Spartan starts shooting up the screens with Cockteau's face on them, he fires more than eight shots (for eight screens), but there are at least two screens remaining when Cockteau chastises Spartan. Surely, someone like Spartan would not use more than one bullet per screen. Where did the other shots go?
Continuity mistake: When the Cryo-Prison worker opens the cabinet that holds the cylinders that contain the blue "freezing balls" to freeze Spartan's slush, the slot on the center left is empty. When the shot changes to the worker pulling the cylinder out, the slot to the lower left is now the empty one. (00:09:45)
Continuity mistake: During the Oldsmobile dealership scene two robed citizens are shown to be looking at small scale model cars on the rear wall (blue car) and side wall (red car) in the showroom. When Huxley and Spartan bust through the floor in the elevator the two citizens are missing. (01:30:50)