Factual error: As a trash compactor Wall-E does not function logically. When he fills his chest compartment with garbage and runs his internal compactor, the cube that exits his body is the same volume as the trash he puts in, despite that trash having been compacted. He does not add extra trash to fill the empty space after running the compactor - there are three scenes that show him filling up only once with loose garbage and then ejecting a densely compacted cube. (00:02:30)
Factual error: Near the beginning of the film, Calico is sitting with a cat on his right shoulder. Their reflection is shown in the glasses of a man directly opposite. The reflection shows Calico and the cat in the same position instead of being reversed, as a reflection would be. (00:04:30)
Factual error: Alex Rover travels from San Francisco in a large plane to Borneo, then a small plane to Rarotonga, then a small boat to Tuvalu, then a helicopter to the Buccaneer cruise ship (located close enough to Nim's Island at 20S-162W for her to row there). My globe shows these places to generally be too far from one another given the particular mode of transport. Borneo and Tuvalu are too far out of the way to fit with this story.
Factual error: When Marley runs on the field during the Marlins' Bark at the Park night, the stadium scoreboard can be seen briefly behind him and John. "WAS" (Washington) is listed as one of the teams playing a game that night, despite the fact that Washington did not have a team before 2004 and the film takes place in the early 90s.
Factual error: In the beginning dialogue when the narrator is talking about the locked box being passed down from mayor to mayor, when it reaches the 7th mayor, the counter is at 47. Later, when Lina is delivering a message to the current mayor, she stops at the portrait of the 7th mayor and says it is her ancestor. In that portrait, the box is visible under his arm with the counter showing 120.
Factual error: When Kendall is about to implode the school, the demolition practices are completely unfeasible. The school would be completely gutted, with all glass, copper, and plumbing removed (the building simply looks cleaned out a bit); additionally, significant structural damage would be intentionally introduced to weaken the internal support (every wall is largely cored); further, the school building and/or surrounding buildings would be sealed in tarps to minimize damage spread; finally, the crowd of protesters and onlookers would be at least a quarter-mile away. Even given this is a bit of a fairy-tale story, the demolition techniques are completely incorrect on several levels.
Factual error: When Troy calls to Gabriela from the rooftop, the clock on the school's facade reads about 7:46, but the sun is almost directly overhead. There's no way it's quarter to eight in the morning.
Factual error: The Volkswagen Campervan that is used at the beginning of the film has a Zürich number plate, yet the cantonal coat of arms to the right of the number plate is that of the canton of Ticino (red and blue stripe). This is incorrect: The coat of arms should have been a white-blue stripe, which is the coat of arms of Zürich Canton and would correspond correctly to the number plate.