Continuity mistake: When Will comes out of the garage to get Teresa, he has an alien's tentacle attached to him. When he and Teresa go in to the garage, he no longer has the tentacle attached. (00:34:25)
Factual error: Three men are having beer one night in the woods. One man says he has a picture of a girl he took the previous Tuesday. When he goes to get the picture (which would be on his phone), he complains that he can't show it because there is no signal reception. You don't need a signal to show a photo you took on your phone. (00:07:10)
Factual error: Malik's son calls his father's parole officer. When she asks where they are he says they had entered Nevada. A while later, they stop at a pharmacy. It is called Las Lunas Pharmacy and Liquor. Las Lunas is in New Mexico, 85 miles away from the Nevada border.