Revealing mistake: In the big wheel, the boy falls out and grabs Axel's leg. When it zooms out, it is a man climbing his leg.
Revealing mistake: When Axel shoots the guy on the tracks of the subway ride, you can see a little wire flip up from his leg when he falls. This is the wire that goes to the squib in the guy's shirt.
Revealing mistake: When Hector Elizondo is on the radio trying to find out who is paging him, he is talking to the rear of the hand piece.
Revealing mistake: During the rescue on the big wheel, the people in the gondola behind Axel are obvious dummies, not only are they not moving in any shot but the man keeps his arm in the air pointing the wrong way the whole time.
Suggested correction: The actor does move his arm at the end when he is seen for the last time. They are real people.
Revealing mistake: When Axel is jumping from car to car on the spider ride, he just about falls. There is a shot looking down as some people try to help him. It's painfully obvious that it's a stunt man. He looks a lot different from Eddie Murphy.