Corrected entry: There's no reason Verruca's dad or any of the other characters for that matter couldn't have climbed over the gate to save Verruca from the squirrels without resorting to the keychain.
Corrected entry: After all five kids find the golden tickets it's revealed they have to be at the factory on a specific date and time according to the ticket. So what would Wonka have done if all the tickets had not been found by that date? Keep in mind it is also revealed that the "Russian" ticket was a fake which was discovered just before Charlie found the actual remaining ticket. If he had not found that ticket or it was revealed that the Russian ticket was a fake after the specific date had come and passed there would have been only 4 ticket winners to arrive at the factory, so what would have Wonka done then?
Corrected entry: In the end where it zooms out and shows the Oompa Loompa narrator, you can see the machines used to shake the snow on the house.
Corrected entry: During the Mike Teavee scene, the drummer is not even touching the hi-hat Mike is hanging onto, thus he should not have been launched up in the air. (01:27:15)
Corrected entry: The FPS game Mike plays would set the movie no earlier than the mid 1990's, yet in the retrospection scene which is said to take place twenty years earlier, everything from cars to clothes is not younger than from 1950's, which would be about 40 years earlier.
Corrected entry: Violet's clothes wouldn't be affected by the gum, but her clothes expand and turn blue.
Corrected entry: When Charlie's grandfather gives him money so he can buy another Wonka bar, the coin changes position in his hand between shots as the camera cuts from Charlie's POV to his grandfather's. The "heads" side faces Charlie first, but then it's facing his grandfather when the camera switches. Unless it's a two-headed (and therefore fake) coin, that's impossible.
Corrected entry: In the beginning sequence of the movie, while the camera is flying over the conveyor belt it shows a bunch of fans that are used to cool the chocolate enough to be picked up without falling apart. The fans that are used to do this are upside down. The air flow created from such a fan would blow up, not down, thus not blowing any air on the chocolate. This is apparent when the camera angle is parallel to the blades.
Corrected entry: At the chocolate castle, when it begins to melt on the Prince, there is a purple umbrella next his chair, when the shot changes the umbrella is gone.
Factual error: In the scene in the glass elevator, when Mike Teavee wants to push a button, he presses the TV Room button. The elevator stops going down and immediately moves horizontally. The characters within the elevator are thrown against the wall from the sudden change. However, they are thrown against the wall that is in the direction the elevator is now moving, instead of the opposite wall as they should have been. (01:20:15)
Grandpa Joe: Mr. Wonka, I don't know if you remember me, but I used to work here in the factory.
Willy Wonka: Were you one of those despicable spies who everyday tried to steal my life's work and sell it to those parasitic copycat candy making cads?
Grandpa Joe: No, sir.
Willy Wonka: Then wonderful, welcome back.