Character mistake: When the 3 boys and Rogers are trying to recruit scouts, they pledge to Rogers and Carter raises his left hand but in the next shot he has his right hand raised. (00:09:05)
Character mistake: Ben convinces Becky to let him work with her using the line he heard from Jules' mother, but he says it wrong; she said that women who sleep less than 7 hours per night are 38% more likely to gain weight, and De Niro says that they gain 38% more weight - kind of a big difference. (01:02:45)
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).
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)
Character mistake: During their bickering about the coffee, the idea is that the officers just drank some coffee made from beans coming from excrements of rhesus macaque. That's how the civet coffee is made; macaques merely chew and spit the beans, they do not 'process' them (that'd be the kopi luwak that he references immediately after). (00:27:00)
Character mistake: Oh claims to not understand the word "my" when he is with Tip and always refers to her mom as "mymom" and "your mymom." But he seemed to understand the meaning of the word perfectly before because he talks about "my best friend Kyle" in his evite.
Character mistake: When driving to the airport Pam Schoenberg is talking to Maria Altman and referred to her as Ms. Adel instead of Ms. Maria or Ms. Altman.
Character mistake: Sciarra's (pronounced Shara) name is constantly mispronounced Skeeara, even by Italians like the priest at the funeral.
Character mistake: Nob Hill is mentioned as the highest point in San Francisco. It isn't the highest point. Mount Davidson is.