Continuity mistake: When Dredd is talking to Hershey in her wrecked apartment the cut above his eye runs across his eyelid but later on when he's talking with Rico in the Janus lab the cut follows his eyebrow and doesn't touch his eyelid.
Continuity mistake: In the scene where one of the "high council" is speaking (behind a desk or pedastal), there is a close-up shot of the highest ranking council member's face. In his nostril you can see a dry booger. They then change the shot and then come back to a close-up of his face. The booger is no longer there. Sorry if this is a bit gross, but I found it amusing.
Revealing mistake: In one of the final scenes where Stallone is hanging out of the Statue of Liberty, you can see that his "JUSTICE TATTOO" on his upper arm is a fake. You can see at the edge of the tattoo that it is glued on the skin.
Continuity mistake: As Dredd and Fergie are escaping from the Halls of Justice they jump on one of the bikes. As they jump on the bike Dredd is wearing a jacket but in the next frame as he activates the bike his jacket has suddenly disappeared.
Visible crew/equipment: When asking the street gang in the street war sequence to drop their weapons ("I am the law") you can clearly see the cable the microphone is connected to running from the back of Stallone's helmet. This cable is not visible before or after.
Continuity mistake: When Rico is activating the ABC-robot, he tells it "we're going to war". His face is then very close to the robot, only inches away. The angle changes to a shot over Rico's shoulder, and his head is now much further away from the robot, even before the robot starts to sit up.
Continuity mistake: At the end when Rico is falling off the Statue of Liberty he is falling in slow motion yet the cars down below are driving around in real time.
Audio problem: When Judge Dread and Rob Schneider are running to escape from oncoming guards they are stopped by one guard right before they leave on the motorcycle. The guard says "I knew it was you Dredd." The camera focuses on him before he is done saying that but his mouth is not moving.
Audio problem: Just before Junior Angel shoot a missile on the prisoner's ship, he says something like "Gonna get me some city boys", but his lips don't move.
Continuity mistake: When Dredd and Fergie are fleeing, as the approach the dead end, you see the bar sign in front of them, on the right, which they start to pass when the taxi crashes. In the next shot, they pass it again, but in the next shot after that, the bar sign is once again in front of them.
Continuity mistake: The final battle inside Liberty's head - Rico tries to escape on his Lawmaster motorcycle. Dredd pulls Rico off and the Lawmaster plummets to the ground. Seconds later when they show a slow motion shot of Rico falling to the ground there is no wreckage whatsoever of the Lawmaster beneath him.
Other mistake: After the scene shifts from Rico busting out of the black body bag to the street scene, as the camera pans down and to the left, water running off the shading panels of the camera moves along with it.
Other mistake: Dredd tells Judge Hershey that lethal range for bullets is 300 meters "you're safe" straight after people were being shot and wounded on the ground at that distance.
Suggested correction: Wounded, but not dead. He says they aren't lethal, he doesn't say they can't hit you though. His logic is that they can't be killed by the bullets so therefore they are safe.
Presumably the Judges also have body armour which will protect from extreme range and hence lower power bullets, which civilians wouldn't have.
This. That statement about how it would be lethal even though they're 300 meters away always bugged me (on multiple sites), of course it might be injurious or even lethal to civilians, but I'd expect that Judges would wear armor that would protect them.
They were shot dead, extremely obviously. Huge holes in the stomach.
Other mistake: As the transport rises and passes close to the lone guard, it's reflected in his visor. However, since it's close enough that the thrusters are billowing his cloak, the reflection should be bigger.
Visible crew/equipment: As Hershey and Dredd deal with the driver in the red car, the film crew and equipment can be seen in their helmets.
Revealing mistake: When Fergie is given his work detail and address at the start of the film he walks through the door and sees Mega City. Look at the live traffic at the bottom of the screen - the same shot is used again just as he boards the yellow shuttle. The traffic queue is the same vehicles in the same order.
Audio problem: As he's walking through headquarters to get Rico, Dredd is unmasked by another judge. You hear the the guy say "I though it was you!" but his mouth doesn't move.
Visible crew/equipment: When Dredd is done judging the motorist, blows the car up, and says "Happy motoring!" the squad comes to arrest him. When the camera is looking at him, you can see an overhead camera rig reflected in his visor.
