Visible crew/equipment: Watch the scene where Robocop is being assessed for fire damage in the lab. You can see a monitor on his far right side fluttering, however no other monitors flutter as the camera passes in the room.
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...
Continuity mistake: When the Enforcement Droid Series 209 fires at the police cars, the car in front has two stickers on the driver's door reading "Security Concept." After two bullets hit the door, the sticker with the "Security" text is missing.
Visible crew/equipment: When the Ninja robot attacks Robocop doing flip jumps, one can see it's a Caucasian stunt double, plus his hair is dry as opposed to the Ninja's slick hair.
Revealing mistake: When Robocop flies towards Marie and Nikko to save them, one can see a support by his waist (or a black fabric covering his legs).
Continuity mistake: When Robocop is in the sewer, Nikko extends his left arm, grabs a ladder and mumbles, "Oh, rats." There's an instant cut, and now it's his right arm extended.
Continuity mistake: During the Ninja robots' fight, the man behind remains in the same position all the time, except for the moment the explosion occurs, where he is briefly seen standing in a skewed position. An instant cut later, he's back in the previous position.
Visible crew/equipment: When Robocop's hand is cut, lighting screens are reflected on his helmet and armour.
Continuity mistake: When Robocop is rebooting after being repaired, he is imaging going through a wormhole of sorts. He sees his wife there. Then, his wife morphs into Lewis. Then, it morphs into Lazarus. However, the mole near Jill Hennessy's mouth is on the wrong side in that shot.
Continuity mistake: Towards the end, while the Rehabs recruit gang members and the punks are struggling with the cops and deputized citizens, the sun changes in several shots.
Other mistake: After officer Lewis dies, the camera close-up shows her breathing. There is also eye movement.
Other mistake: The explosion at the gates to the Police Ordnance depot is utterly ridiculous. They blow up steel gates with dynamite, but the resulting explosion is a fuel type flame. It's metal they are blowing up, not a combustible material.
Continuity mistake: Watch the subtitles in the police chase against the battered yellow van. In one scene where the two gentlemen are narrowly escaping the hit, the young officer says "ease it up" but the subtitles say "jesus".