Character mistake: After Macer shoots the shotgun man during the house raid, she checks his pulse without removing the weapon from his hands first.
Character mistake: In a scene when Watney is recording his video log, he imagines what would happen if his pressurized shelter suddenly would break. He concludes that he would implode, but the correct wording would be explode.
Character mistake: Near the end of the movie, when Newt and Minho and Frypan and others are all being checked by WCKD's scanners to identify the subjects. Minho is called subject A4 when he is really subject A7, subject A4 is Chuck. Newt is also called subject A6 when he really is subject A5, Subject A6 is ALBY.
Character mistake: When Gaby's car becomes wedged between two buildings, she says, "Good plan. All we have to do is get over two twenty-foot walls and a minefield." While minimal backstory is given, I think it reasonable to assume that she has lived in what was East Germany all her life. It is thus highly unlikely that she would express a measurement in English units (being bilingual doesn't mean you automatically convert measurements). She would have said something like "six meters."
Character mistake: When Claire and Lowery look at the gyrosphere in red on the control panel, written above the gyrostation is "Return Request Disbhatched." Dispatched is misspelled. (00:55:20)
Character mistake: When Dotzler is giving one of his first meetings when trying to catch Brian in the police station, the LAPD signs behind him are misspelled "Departement."
Character mistake: When in the car both are talking about a scar on his back. He is telling her he was in Serbia chasing a man all over the tundra. Mistakenly thinking of Siberia instead. (00:41:13)
Character mistake: The poster on the wall near the start reads "Our Egg Donor's [sic.] are helping to fulfill the dreams of women across America." There is an unnecessary apostrophe in the word "Donor's." (00:10:05)
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: Nob Hill is mentioned as the highest point in San Francisco. It isn't the highest point. Mount Davidson is.
Character mistake: Violet is in the Army, but does not have her hair up properly in uniform.
Character mistake: When 47 is leaving the embassy a marine asks him if anything is wrong. 47 is wearing sergeant's stripes. Marines do not call sergeants sir.
Character mistake: Sciarra's (pronounced Shara) name is constantly mispronounced Skeeara, even by Italians like the priest at the funeral.