Factual error: If the Russian cosmonauts need special suits to survive out in space, so should Lacy when she is abducted by Nuclear Man. (00:02:50 - 01:20:20)
Superman IV: The Quest for Peace (1987)
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Directed by: Sidney J. Furie
Starring: Gene Hackman, Christopher Reeve, Margot Kidder, Jackie Cooper, Marc McClure
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More mistakes in Superman IV: The Quest for Peace
Lex Luthor: Lenny, let's try and keep your IQ a family secret.
Trivia: During the making of this movie Christopher Reeve and Sidney J. Furie didn't get along at all and often clashed with each other.
Question: Why is this movie so full of mistakes and plot holes? Was it created by incompetent crew?
Answer: It should also be noted that the film was originally slated to have a budget of $32 million, which is in roughly the same range as the budget for "Superman III" and movies like Tim Burton's original "Batman." However, shortly before shooting began, the budget was cut by nearly 50%, all the way down to $17 million. As a result, the production was very patchy and rushed. This had an adverse effect on everything.
Answer: It was made on a very low budget. Golen - Golbus productions bought the rights to Superman. They were mostly known for B-Movies with not so big name stars. It was there attempt to play with the big studios. Plus at least 45 minutes of scenes were cut out, with major subplots.
In addition to budget cuts, they kept shortening the runtime, meaning scenes needed to be cut. The comic book adaptation has the uncut scenes and makes much more sense.