Factual error: In the scene where Wes Mantooth shows up to aid Ron Burgundy, the rear of a 1988-1990 era LTD Crown Victoria taxi is scene in the background. The movie takes place in 1980. (01:00:00)
Factual error: When Ron and Freddie have breakfast in the diner, Trivial Pursuit cards are seen on the table. The game was first sold in 1982, but the movie is set in 1980.
Factual error: When Ron starts to fume at Jack Lime; Tony Montana, from Scarface, is seeing shooting his gun, in Ron's eyes. However, Scarface (and thus Tony Montana) didn't come out till 1983 and this takes place in 1980.
Continuity mistake: Before the fight, when Ron is making his speech, Brick goes back and forth from having a trident (close shots) to the futuristic gun (long shots).
Other mistake: Ron supposedly always reads exactly what the teleprompter says. However, for his first newscast for GNN the teleprompter reads "Good evening America," and Ron says "Hello America."
Factual error: When Brick Tamland is informed that the team will be working the graveyard shift, he responds with "I ain't afraid of no ghosts." This appears to be a reference to the song "Ghostbusters", which accompanied the movie of the same title in 1984. Anchorman 2 takes place in 1981.
Factual error: When the motorhome is crashing, the objects and people inside are careening in different directions, colliding with each other. In a real crash, everything would have been moving in the same direction.
Character mistake: At the end of the fight when the Channel 9 news crew shows up, Jack Lime says that they're outnumbered 3 to 1. This doesn't make any sense. Even if he's talking about the entire fight his math is off. If he's talking about who's in their group it seems to be about 9 people on Jack Lime's team, and 8 on Ron/Wes' team.
Suggested correction: There's a shot of the group when Wes says his line about his news teams emptying their gas tanks and you can count 12 people on Jack's team (there's a total of 20 people in the shot and 8 aren't on Jack's team). Jack is only talking about 12 to 4 against Wes' team, not 12 against both teams.