Deliberate mistake: There was no possible way for Edith to still be alive after the spiked coffin closed in on her. There are spikes on the doors and at the very back and sides of it, and she couldn't have squeezed in to brace herself. Probably done for obvious reasons, but still a mistake nonetheless.
Despicable Me (2010)
1 deliberate mistake - chronological order
Directed by: Chris Renaud, Pierre Coffin, Pierre Louis Padang Coffin
Starring: Steve Carell, Kristen Wiig, Will Arnett, Julie Andrews, Jason Segel, Russell Brand
Other mistake: When the ride finishes, there is no sign of a safety bar in Gru's cart.
More trivia for Despicable Me
Question: What does Gru say to Miss Hattie in Spanish?
Answer: "You have a face like a donkey."
Answer: What he says is "You look like an ass."
Chosen answer: "You have the face of a donkey."
Captain Defenestrator