Continuity mistake: Truly crashes into the pond three times: first when the kids are playing in the road and she takes them home, second on the day of the picnic when she says she has nothing else to do and will go on the picnic too, and third at the end of the film when Potts finds out he is rich. In the second of these three, when Mr. Potts carries Truly from her car in the pond, the end of the ribbons on the back of her dress gets soaked in mud, but when you see her again at the beach there is no sign of the dirt.
Continuity mistake: Dick Van Dyke is trying to show his new whistle sweet to Mr Scrumptious, the sweet factory owner. His dog is tied up to a bicycle outside. When his dog hears the whistle he knocks over the bicycle whilst trying to get free and runs up the steps. In the immediate shot following the bicycle is standing up again.
Revealing mistake: In the scene where Chitty is taking off from the castle, Caracticus looks down at the toymaker and Peter and says, "Bye bye". If you look closely, right in front of them, a boy runs across holding a stick he stole from one of the cavalrymen. He is waving it around and you can tell it's fake because it flops around like rubber.
Revealing mistake: During the "Toot Sweets" number in the factory, the cart with the candy trays move freely, however later on when they start spinning on them in circles (right after Jeremy gives Mr. Scrumptious another sweet) you can see each one is spinning due to a pole holding it. You can see it just under the bottom trays.
Visible crew/equipment: In the scene where Chitty Chitty Bang Bang comes into the castle to rescue the family, the shot shows the car turning, but a pivot wheel under the car can be seen, and the actual tire while turning, does not match the radius of the turn nor the speed at which it should be rolling.
Factual error: After they pick up Truly Scrumptious in the newly refurbished Chitty Chitty Bang Bang, look at the road surface as they run alongside the GWR train. There is a broken white line running down the centre of the road. These types of markings weren't introduced in England until the blackouts of WW2.
Revealing mistake: During the "Grow the Roses" number, there are several shots of the wheels of the Baronial car, looking normal. In the final shot of the scene (when the car falls apart) square supports disappearing into the floor have suddenly appeared on the axles, as part of the mechanism to support the car when the wheels fall off.
Continuity mistake: In the "Chitty on the water" scene, when Chitty has deployed a float her wheels become horizontal. In the far way shots, the wheels aren't moving. In the close up shots done in the studio, the horizontal wheels are spinning and there is no visible raft beneath the boat.
Continuity mistake: When the two spies try to capture Chitty by parking their open van under the railway bridge, then dropping a canvas screen down over the top so it looks like the road under the bridge is clear, as Lord Scrumptious's car hits the screen and tears through it, you can see that there is nothing parked on the other side. The van is gone. Yet the following shot establishes the fact that the trap has worked successfully; the car has gone through the screen and ended up in the back of the van.
Plot hole: Near the end of the movie, when Mr Potts finds out that he's going to be rich (Mr Scrumptious wants to buy his invention) and he rushes out to his car to go see Truly, he meets her en route and she's got her hair in an really elaborate style and has changed. But there is no way she could have possibly got to her house, found out that her father had gone to see Mr Potts to buy his invention, changed her outfit, done her hair like that and gone out to see Mr Potts in the short amount of time between Mr Potts and his children dropping her off, and Mr Potts and her meeting at the pond.
Add timeHeather Benton