Factual error: The house slides down the hill and breaks apart when Chowder pulls it down. It completely breaks apart. The furnace would have been destroyed, but the house rebuilds itself later on.
Factual error: When Liz and Abe's plane crashes, it sinks far too quickly to be realistic. Also, from the sheer amount of force the plane hit the water with, both should easily have died. Obviously done for dramatic effect, but still a mistake.
Factual error: General Fury incorrectly uses the DEFCON System. When all of S.H.I.E.L.D's secrets are revealed to the Chitauris, Fury moves to DEFCON 4, which is peacetime with increased intelligence and security. When the threat increases and Chitauri ships are approaching, Fury moves to DEFCON 5, which indicates peacetime. In the DEFCON system, lower numbers indicate higher threats.
Factual error: In the beginning when the animals are waking up from hibernation, it shows Ozzie and Heather running out of the log, which shows they hibernated, but opossums don't hibernate.
Factual error: In the last part of the movie when the animals attack, one of the hunters call the warden. The hunter's phone is a SonyEricsson W710i. This phone does not support video calls and no camera on the LCD part of the phone where it fell forward and supposedly showed the videos to the sheriff.
Factual error: In the Radiator Springs courtroom there is a Latin motto over the doorway, that should read "Justitiae via strata veritate" Which means: "The path of justice is paved with truth." But the first word is spelled wrong as "Justitae."
Factual error: Throughout the film, most Japanese words are spelled in Katakana. In real-life Japanese, however, Katakana is exclusively used for foreign words adopted into Japanese language, like 'table', 'television' (mostly it is abbreviated to 'telebi') and 'racing car'. But in the film, even indiginous Japanese words such as 'samurai' are spelled in Katakana, not - as they should be - in Hiragana (the syllable system used for native words).
Factual error: When the Toad's foot breaks the pipe of liquid nitrogen, it should have frozen the water immediately, but it takes a lot more time to allow the wave to get closer.
Factual error: The drum kit that Courtney plays at the concert is wrong. It has too many cymbals, two bass drums (one is unneeded) and she didn't kick the pedals to play the bass drum and cymbals.