Factual error: When Amy is fired from S'Nuff magazine she takes her story on Aaron Connors to Vanity Fair, who run with it. That is not going to happen. Amy wrote the article while a paid employee of S'Nuff magazine and that means the copyright in the article (and, very relevant to this issue, the photographs of Aaron they paid to have taken), resides with them, not with her. It isn't hers to sell. No magazine editor of any standing is going to buy an unsolicited article without checking its provenance backwards and forwards, and that would mean checking with Amy's previous employers - after all, what would happen if they changed their minds and ran the story themselves?
Factual error: When the family leaves their house to start the long road trip, they show a nice residential area with downtown Chicago in the background. This is not possible. The view and angle at which they are showing downtown is the same image that one would see from the Adler Planetarium. At the angle at which we see downtown Chicago could only be from the Adler Planetarium and there isn't anything even resembling nice residential homes in that area. Also, the area looking at downtown from that angle is mostly water-Lake Michigan and boat docks. In other words, looking at the Willis Tower (Sears Tower) from the Adler Planetarium, it would be 60° off due north, an extreme angle putting the family house either in or very near the water (Lake Michigan). (00:18:25)
Factual error: During the 4x4 chase across the island, the Land Rover used is a modern variant, not in production in 1963.
Factual error: When James and Darnell are about to steal Martin's beloved yet aged computer, which appears to be an IBM 5150 desktop with an IBM 5151 monitor sitting on top; we see James turn the nearby power-strip on and the computer instantly, and oddly, boots-up to the incriminating financial records that will set James free. The problem here is that the characters displayed on the monitor are a kind of light-blue color; but the IBM 5151 monitor only displayed characters in green. (01:16:00 - 01:16:45)
Factual error: Summer and Carmen are at the saloon and catch on the local news the report of the kidnapping. The scene is set in Tuscany, Italy, but the news anchor is Spanish actress Paz Vega, speaking with an obvious accent and mispronouncing words. To make the whole situation even more absurd, she is supposed to portray a native Italian speaker, "Giulia Carni": the last name is Italian sounding but nonexistent in reality, and the headline used for the news report, "Nonna-napper", "kidnapper of grandmother" has such an awkward and unnatural sound and feel in Italian and for an Italian audience, that nobody ever would use it. (00:37:50)
Factual error: During the opening credits a newspaper is shown welcoming the "49th" state. The movie is set in Hawaii and Alaska is the 49th state. Hawaii gained statehood in August 1959, Alaska in the January of that year.
Factual error: A 1955 Chevrolet is parked in front of Lily Tomlin's 1955 Dodge. Its license plate reads "528 GPR." California license plates did not begin to use combinations of three numbers followed by three letters until 1969. The "528 GPR" plate would have been issued circa 1975 and originally had yellow letters on a blue background. For the movie, the blue background was repainted black so the colors were appropriate for 1955. However, an actual 1955 plate would have three letters followed by three numbers.
Factual error: Spongebob and Plankton are told to supervise the universe for Bubbles while he goes on a bathroom break, this result in Jupiter and Saturn colliding with each other. Saturn is depicted as much smaller in relation to Jupiter than it is in reality. Also, the effect of their collision is inaccurate since both planets are mainly made up of gas. (00:44:50)
Factual error: Dave Franco mentions the difficulties finding any hotel in Berlin because of Folson Europe and the Oktoberfest, which would be consistent with mid-September; in the year 2014 when the movie is set, Folsom started on the 13th. But he also adds that the G8 is in town, which is a question mark (couldn't have been the G8 Summit as it was not in Berlin but in Brussels, and in June anyway) and, "this week" the Berlin marathon, who took place on September 28th, definitely too late to be in the same week as Folsom. (00:40:25)
Factual error: In the sailing scene the boat is a modern sailboat from 2014. The decks are suppose to be "teak" but are plastic.