Factual error: When Robocop first flies into the the battle at the end of the movie, the whine from his jetpack causes the glass in some windows to blow outwards. Considering the sound waves are hitting the glass from the outside of the windows, they should be blown inwards not outwards.
Revealing mistake: When RoboCop gets his hand cut off by Otomo, he stands up and looks around him. We are given a normal shot of the base, but the screen moves in time with RoboCop's head movements. Surely this shot should have been the 'lined' picture that RoboCop has for his POV shots, and not the normal camera view we were given.
Continuity mistake: At the start of the film, when we first see Bertha she is being pushed around by a rehab, and she eventually falls to the ground. She then places a small bomb on a crane she lands beside, and the bomb is pointing to the left. When she gets up and moves away, we go back to the bomb at it is now pointing to the right. Whats also interesting to note is the fact that the rehab doesn't notice Bertha take the bomb out or place it on the crane. Surely if you're standing right behind someone who is on the ground, and you are watching their every move, surely them taking an electronic device out and placing it on an object almost infront of them would draw your attention?
Other mistake: When Lazarus and the head of security concepts are talking about removing RoboCop's emotions, the other doctor speaks up and says that they could install a "microneuro barrier" that would block his emotions. He pulls the bag containing the chip from his lab coat without even looking at the pocket, conveniently. Seems a little unbelievable that someone would carry around a single purpose chip and know exactly where it was if RoboCop hadn't previously been giving them any problems.
Continuity mistake: When RoboCop gets hit by the grenade launcher outside the church he flies backwards and suffers heavy damage. Yet, later in the film, he sets fire to a huge pile of explosives right beside him, and they have no effect on him whatsoever, even though they do manage to send a rehab several feet in the air and he is nowhere near the explosives. Surely RoboCop should have been damaged slightly or have even moved when the explosives went off.
Continuity mistake: Right before Lewis gets shot to death, there is already a gun wound on her arm.
Audio problem: At the beginning of the movie, during the scene when Bertha and the rebels steal the police arsenal, the big guard robot speaks with a metallic voice to make warnings, but in the version of the film dubbed to Spanish, it is completely voiceless.
Plot hole: Marie and Nikko show up with a huge police van, and lots of computer equipment. Are we to believe that they stole these items from a busy police station and no-one noticed? How did they get all those heavy computers and machines loaded into the van by themselves? Did the police not notice one of their SWAT vans missing either?
Revealing mistake: When RoboCop storms out of the underground base to the police station, we cut to a scene in the police department. If you watch really closely, nobody actually moves in this scene for about three quarters of a second after the scene starts. People to look out for include the police officer on the far right standing beside a woman in a orange top, (only really noticible in the widescreen version), and the people behind their desks in the background. They are all still or posing, which is amusing to see before they all suddenly come to life. (01:02:14)
Continuity mistake: Anyone else ever notice that in all three of the films, the name of the station that RoboCop works out of is always different? I'm sure these aren't in order, but, it's been called Metro West, Metro South, and Metro North. Sure, they may circulate him through the city, but, all the same cops always seem to follow him. Detroit needs to find somewhere to put excess cash if they have that much to blow on relocation for an entire precinct.
Continuity mistake: RoboCop storms out of the underground base taking with him his hand attachment, but when he arrives at the police station he has the hand attachment on. A few scenes later he arrives at McDaggetts hotel, and now does not have the hand attachment on, and is back to using his normal gun. Then, when he returns to the underground base, he still is using his normal hand and drops the hand attachment on the ground. So in between all these scenes, where was he keeping his hand and the attachment? He was on foot all the time, and he obviously wasn't carrying them both...