Continuity mistake: When the gas station attendant is sitting at the table going through the bag, he has a cigar in his mouth, but it is not smoking. In the next shot it is instantly smoking heavily. Then, in the next shot, instantly, the cigar vanishes from his mouth altogether. (00:07:50)Hamster
Continuity mistake: At the very end of the movie, when Doug returns with the dog and the baby, the survivors have a big hug. Then the camera pans out and we discover someone is watching them. When the camera pans out there is absolutely no sign of the trailer that just blew up or the car.
Continuity mistake: Soon after the car crash in the desert, the mom is seen bringing out deck chairs. She brings out two (one dark blue one and one light blue one) and leans them up against the campervan. But in the next shot the light blue one which was in front of the dark blue one has vanished. (00:22:25)Hamster
Continuity mistake: When Doug is walking across the desert, soon before he and Bob leave for help, he walks into shot with Brenda in the background laying back on her lounger and the bottle of lotion is lying on the ground beside her. In the next closeup the bottle of lotion is suddenly standing upright, beside her lounger. (00:23:40)Hamster
Continuity mistake: In the shot where Doug's fingers are cut off, the severed finger that remains on the floor is covered in blood, but next shot of him pulling his hand away shows almost no blood on the severed finger.
Continuity mistake: The scene where the father has gone back to the gas station to look for help, he purchases a bottle of water and pays for it. He takes a sip and walks into the back. He puts the bottle down on the table, and the bottle is now half empty.
Continuity mistake: In the scene where Doug is standing by the generator and finds his baby, he hides from Cyst against the house's wall as Cyst passes, dragging a corpse. After Cyst passes, Beast whines which makes Cyst turn. In that split-second, Doug and Beast manage to get inside the rusty car a couple of feet away.