Factual error: At the beginning of the movie, Jason Sudeikis pops out of a door wearing a Jurassic 5 T-shirt. Problem is, the artwork on it is from the cover of Feedback, their 2006 album. The scene, as the introductory caption says, is supposed to happen in 2002. (00:00:55)
Factual error: The producers took a lot of pride in using period-accurate furniture and clothing. But the family's house and furniture aren't remotely accurate for their actual situation. The table, the chairs, the house with a sleeping loft - all those took technology and manpower that they didn't have, and we've already seen that they had nothing to trade either. And they have more furniture than could have fit in that wagon.
Factual error: A band poster for the Polish blackened death metal band Behemoth is shown while Bruce drives around the town, however the poster features the band as they are in 2015 while the film is set in 1990.
Other mistake: The town is Mt Barker. The red and blue ribbons on the sheep pen say Mt Baker.
Revealing mistake: Just before Madison is about to be pulled up the stairs, it's quite too obvious that is isn't Kennedi Clements, rather a stunt double.
Continuity mistake: In 1954, when Killian is about to leave home, he sticks a pair of skis into the snow. In the shot of Killian sticking his skis into the snow, his body is rotated slightly to the left to be face-to-face with the skis and his hands are touching them. In the next shot, his body is suddenly facing forwards and his hands are off the skis. (00:10:19)
Character mistake: In his opening prologue, Burt says the Graboids have been contained to the Northern Hemisphere, showing a map highlighting the Graboid attacks of the first film in Nevada and the second film in Mexico. However, it overlooks the Graboid/Shrieker attack in Argentina, in the Southern hemisphere, shown at the beginning of Tremors 3, an incursion Burt personally put down. It's not like it was classified - characters in that movie talk about it being reported by CNN, and characters in the Tremors TV series talk about it as well. And it's not like Tremors 3 is no longer canon, since Burt makes two references to being swallowed by the Graboid in that movie (which also becomes a plot point in Tremors 6).
Visible crew/equipment: When Davis comes out from the train with the headphones on in the subway just before starting to dance, a cameraman filming the scene can be briefly seen reflected on the train door's glass. (01:08:00)
Continuity mistake: In the locker room scene after Tony injures his knee, Tony walks outside the room crying and he then throws his helmet against a wall, causing the chin strap to fall off onto the floor in front of the the doors. When the coach walks in through the door, the chin strap has disappeared. When the coach and Tony hug, look just behind the coach's right arm. You can see a quick glimpse of the chin strap back on the floor where it was before.
Other mistake: When Otto Preminger calls Trumbo from his car to announce that Trumbo's real name would be credited for Exodus, Preminger tells him to look at the front page of the New York Times. The problem is that Trumbo has already picked up the paper from his counter and is reading before Preminger even tells him which newspaper features the article.
Continuity mistake: When Billy and his daughter are at Moreen's grave the sun changes between shots.
Factual error: The film opens in 1914, then states "12 years earlier," meaning 1902, yet there are many references to Queen Victoria as being alive. She died in 1901.
Character mistake: The protagonist is reading the review of his book "Bitter Tulips." The influential literary critic publication apparently has zero proofreading, since the article says that the novel "can be described as AN failed experiment." (00:45:00)
Continuity mistake: Right at the beginning of the movie, the Sergeant pulls his jeep over and headbutts a prisoner who is carrying a Danish flag, seizing it. In the following shot he has his arms open and shoves away another prisoner, no flag in his hands. Next shot, he's standing by the bleeding prisoner, folded flag in hand. (00:02:25)
Factual error: Dev Patel is standing in front of Trinity College's statue of Issac Newton. Directly behind the statue is a marble wall with names carved into it. This wall is a list of the members of the college who died in World War II. It would not have existed in 1914.
Continuity mistake: When the boys are about to enter the woods and they arrive on their bikes, the younger boy can be seen first on his bike, then standing next to his bike in the next shot, then on his bike, then he's off it again where he lets it fall onto its side.
Continuity mistake: In order for Superman, Wonder Woman and Batman to break into the secret room, they knock it down. Four enemies who were waiting for them in front of the door are crushed by the falling door and blood is splattered, forming a pool of blood in front of the door. During the fight that follows, there are several shots where the knocked over door is shown, but the pool of blood at the front of the door has vanished. (00:07:10)
Other mistake: Whilst the main character is having a 'talk' with the general, the world clocks on the way show 3:50 on time 1, and 3:49 on time 2. (01:25:10)
Other mistake: In the break-in lab scene where the characters attempt to film their second resurrection, Zoe has her right hand on the electrical circuit breaker. After she throws the breaker and is electrocuted, Frank after unsuccessfully trying to revive her removes her wedding band, which shows clear burn marks on her ring finger of her left hand. (00:32:00)
Factual error: The girls missed the bus for the football match because one of them got stuck. Luckily they manage to stop a passing truck and ask for a lift to overtake the bus, which, they stress, was bringing the girls "to Trabzon." When their custodians see them cheer on TV and drama ensues, the match is Galatasaray (GS) vs Trabzonspor (TZS); the home team is Galatasaray, so they should be playing in Istanbul. (00:27:30 - 00:29:30)