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.
Other mistake: At the end of the movie, after Axel Foley changes the Wonderworld dollars to say "Kiss My Ass", the corrupt government agent that discovers them gets shot 3 times, but there's only 2 gunshots.
Suggested correction: He only gets shot twice. Both shots are on his left lapel. You may be confusing his pocket square with a bullet wound.
Continuity mistake: The new character that Uncle Dave reveals at the end, Axel Fox, can be seen earlier in the film at least one time.
Suggested correction: When is it seen? The park already has a fox character, Floyd Fox. This entry is too vague without a scene reference, time code, or screenshot.