Continuity mistake: At the Gator Motel, after Cledus and Bandit get part of the money, when Bandit starts crying about Frog and blows his nose into the money, there is a side shot showing a wad of bills in Bandit's shirt pocket before he actually puts the bills into his pocket in a following shot. (00:12:45)
Continuity mistake: Gene Wilder's pencil disappears in the classroom scene. (00:33:30)
Factual error: The first thing on screen after the opening credits is the year the film is set in, 1953. How then, do Kim Novak and Tony Curtis make their arrival in a Cadillac convertible, which is quite obviously of 1959 vintage? (00:19:44)
Deliberate mistake: Has there ever been a more obvious body double than the one used for Angie Dickinson in the shower scene? Not only does the top of every shot stop right at the collarbones, she is much taller than Dickinson, she has a much deeper tan and (of course) her breasts are much, much bigger. In fact that is Victoria Johnson, Penthouse Pet of the Month for August, 1976.
Visible crew/equipment: When Harris and the two Irish men have been killed at the end and the car crashes on top of the other the ramp used to make it fly is visible.
Continuity mistake: When McVicar is going crazy he knocks the food off the table along with this yellow cup, however this reappears on the table again.
Other mistake: Someone in the film discusses being "stabbed with a gun".
Continuity mistake: When Julian Kay is tearing apart his Mercedes to look for the stolen jewels, he is seen pulling some plastic off the driver's door, in the next shot, you can still see the plastic attached to the car door.
Factual error: It is established early in the movie (Natalie's call) that the money ball event celebration is part of the -first - anniversary of the Valley River Center, the shopping mall where most of the movie is set, with the town of Eugene, Oregon, mentioned explicitly. However, the center opened in 1969, and the movie is set in 1980. The original script was written in 1971, so that line needed an update and slipped by.
Continuity mistake: Gus Soltic at the beginning of the movie pours ketchup on the eggs. When he's done, he moves away the bottle in one shot, but it's still vertical above the eggs in the next shot. (00:02:00)