Factual error: In the episode where Sydney is supposed to be in Helsinki, there are visible skyscrapers in the background. There are no skyscrapers in Helsinki.
Factual error: Sydney is sent to Malaga, Spain, but right after the location pops on the screen it fades to the city hall in Stockholm, Sweden.
Rendezvous - S1-E21
Factual error: When Sloane is talking to Emily on the telephone, Sloane's phone emits a call waiting beep and the camera focuses on the phone's screen. There are two factual errors here: 1) The phone icon for "Line 1" near the top right hand corner of the phone display is in the "on-hook" position indicating that there is no call in place. 2) The call information is displayed incorrectly. It is obvious that this is a Cisco XML card with the text entered. (00:32:10)
Factual error: At the start, just after Sydney has the phone call regarding Will, she goes to meet her dad and says that they can save Will, if they get the Rambaldi document from the CIA and the ampule from SD6. In fact, it is the other way round; the CIA have the ampule, and SD6 have the page.
Suggested correction: SD6 got the ampule off Sark after catching him when Vaughn left him to help Sydny.
I am afraid not, Vaughan recovers the ampule before leaving to save Sydney. Thus CIA still has the ampule.
Factual error: When Sydney goes to find the Artifact in Siberia, she is told that if the ice breaks she will have only 4 seconds to get back up. If it is that cold out how come the ice is not thicker?
Factual error: In Season 2 episode 4, in the scene after the house explodes, Sydney can be be seen communicating with the CIA over her COM unit. In the proximity that she was from the explosion of such a magnitude, COM frequencies are disabled. (00:40:35)
Passage (1) - S2-E8
Factual error: When Sydney goes to Uzbekistan, it isn't Uzbekistan. The restaurant where the meeting occurs has nothing made by Uzbeks, and it is too remote to be made by foreigners. The people are speaking Arabic instead of Uzbek and Russian, and the sign on the wall is also Arabic. The guards are also wearing what appears to be a Russian uniform, even if the badge is correct.
Factual error: Francie alters Will's cell phone so she can download items from the CIA's computers via it. In order to start the link, she calls him on the cell phone, asks him to look up a recipe on his computer, and then this cell phone is able to download a 3 gigabyte file. The phone Will uses has a maximum data transfer rate of 14.4 kbs; wouldn't Will get suspicious after he's forced to surf for this recipe for 57 hours while that gigantic file downloads?