Continuity mistake: During the scene on the beach, the shadows lengthen and shorten dramatically from shot to shot.
Other mistake: In the middle of the movie, there is a scene with the two moms on the couch talking. One mom (red hair lady) wears a necklace with a charm that says "love." There are two camera shots in this scene, one looking directly at her, and another from over her left shoulder. Depending on the shot, the 'love' charm is either visible or tucked under the top of her shirt. This swaps back and forth.
Revealing mistake: After exercising, Valerie is in bed watching the news, then the scene changes to a shot of her house showing a Honda Accord at the 2002 meeting but this model did not get released until 2008.
Character mistake: When Johnny and Cleo leave the Chateau and head for Vegas, they are shown getting on the 101 freeway North (in Hollywood) and are coming from the east and turning right onto the freeway. The Chateau is in West Hollywood so to turn onto the freeway where they did, they would have come from the west.
Factual error: If there was that much of a famine in the pack, the Omega wolves would surely have already died of hunger.
Factual error: When Luke puts the starting cables on the battery of the pick-up truck sparks fly from the connection. However since he hasn't connected the cables to anything on the other end yet no sparks should be visible. Next to that the battery is nearly dead so there is no power to give the sparks in the first place.
Revealing mistake: When John gets his "birthday wishes" from the crazy 8, you can see he is wearing a black pair of jocks under his sleep shorts.
Factual error: In golf scene, Kevin Spacey is supposed to be playing golf in St. Andrews. The intensity of sun and the surrounding fauna suggests they are actually playing on a course in the mid latitudes of the US. (00:11:30)
Other mistake: The hospice male nurse Juan Is credited as Julio in the credits at the end.
Visible crew/equipment: When Jarod goes into the basement for the first time, the shadow of what appears to be a suspended microphone can be seen swinging pendulum-style. (00:29:47)
Factual error: When the Senator is looking at the rent ledger, there are entries for each property as well as the date that money was collected. One of the dates is 2/29/74, yet 1974 was not a leap year. The only leap years in that decade were 1972 and 1976. (00:56:30)
Factual error: The movie is set in 1979-1980. You can see vehicles all throughout the movie that were manufactured after 1980.
Visible crew/equipment: When Mister and the Boy are keeping watch in the woods, just after Boy asks "What are we going to do when the baby comes?" They heart a noise and stand up, as the camera follows Mister you can see lights in the distance, even though they are supposed to be alone in the mountains. (01:20:00 - 01:21:00)
Other mistake: Blake jumped through the window, shattering the glass and propelling many fragments through the air and towards/onto Edgar and Zoe, but no-one got cut. (00:34:10)
Audio problem: When Niko is going to get the key for somewhere for Zoe to hide and then Zoe disappears he says "Zoe"? When he says it his mouth does not move but once he finishes saying it that's when his mouth moves.