Anachronisms: A tall radio tower is visible in the background during the "Chitty Chitty Bang Bang" reprise when they're floating on the water.
Revealing mistakes: When the Baroness falls into the lake, the downdraft from the helicopter is visible on the surface of the water.
Anachronisms: During the overhead shot of the car driving next to the train, the dotted lines on the paved road are visible.
Crew or equipment visible: Cable pulling Professor Potts along the ground when he is testing his rocket pack.
Continuity: When Edison the dog breaks free of his leach during "Toot Sweets", he drags the push bike over and across to the steps. Two shots later, when the bunch of dogs are running towards the factory, running up the steps and the bike is neatly upright as before.
Plot holes: At the end of the film, the children recognize Lord Scrumptious's automobile, but the only time it has ever been seen before was inside Potts's fairy tale.
Continuity: The hood area of Chitty Chitty Bang Bang often changes from a highly reflective chrome finish to a less reflective silver finish for the special effects shots.
Anachronisms: The locomotive overtaken by Chitty Chitty Bang Bang in the main song sequence is a J94 "Austerity" Saddle Tank locomotive. It has the legend "GWR" (Great Western Railway) on the side. The J94 type of engine was not built until WW2, well after the period the film is set, and no J94s were ever operated by the Great Western Railway. Also, the GWR livery was a deep green, not blue as shown.
Continuity: In the opening scene when the original Chitty Chitty Bang Bang race car crashes, it is quite obvious that the radiator is damaged in the fire. In the next scene when the children are playing in the soon to be scrapped car, the radiator is fine.
Anachronisms: When Chitty Chitty Bang Bang is first hauled back to the Potts' farm, Grandpa Potts is reading a National Geographic with a color cover. National Geographics had text-only covers in 1910.
Crew or equipment visible: In the seaside picnic scenes, the overhead shot of Chitty Chitty Bang Bang arriving at the beach and leaving the beach show an underwater ramp on the right side (used for when the car was in the water). This is also visible during one of the other beach scenes.
Continuity: At the end of the seaside picnic, before Caractacus begins telling the pirate story, Truly ties the picnic basket onto the back of the car. The basket is absent as the car cruises on the water, but reappears when they drive out.
Continuity: Before the pirate story, we see the car parked in different places on the beach.
Continuity: When the zeppelin is carrying the privy, the zeppelin appears to be moving much faster than the privy during close up shots of the flight deck of the zeppelin and the privy.
Continuity: After "the tide comes in" and we see water around the car, there is one more brief close-up shot where the car is sitting far from the water.
Continuity: When Mr Potts is on the "rocket Ramp", the sky changes from clear to cloudy to overcast.
Continuity: The main floor of the toy shop is slightly below street level. However, the ceiling of the basement is about 3 feet above the street level.
Crew or equipment visible: In Mr Potts's home and workshop, we can see the reflections and shadows from professional lighting equipment.
Continuity: During "Chu-Chi Face" Baroness Bomburst is wearing pumps. When she is standing on the trap door, she is wearing flat slippers, and when she re-enters the room she is wearing pumps again.
Factual errors: The switch for the cooking machine has wires connected to only one side of the switch.
Continuity: The wrinkled table cloth quickly gets smooth before the plates roll down to the table.
Continuity: When they enter the shop floor, the windows are all closed. However during the dog invasion, they are open.
Revealing mistakes: When they are spinning on the carts, most of the carts are moving on their casters. However, the cart that Mr Potts is on appears to be mounted on a swivel type pedestal.
Revealing mistakes: The cooking machine heats the plates hot enough to fry the eggs and sausages and then sends them down the ramp to the table. When the plates and metal roller frames arrive at the table, they would still be hot enough to cause burns. However, Mr Potts and the children grab the "burning hot" plates with their bare hands.
Revealing mistakes: When they get up from the table, the cooking machine is not in operation. However, the "power switch" for the cooking machine is still in the "on" position.
Continuity: When Truly's car runs in to the lake, the children's faces are dirty. When they arrive at their house, their faces are clean. However, when they are getting ready to eat, their faces are dirty again.
Continuity: When Chitty Chitty Bang Bang crashes, the front end suspension is badly damaged and the left front wheel is bent. However, when the car arrives at Mr Potts's workshop, the front end is not damaged and the steering works fine.
Continuity: When the zeppelin is carrying Grandpa's privy, it appears to be at least 25,000 feet up. Seconds later, it is so low that it is hitting the water.
Continuity: The foliage changes back and forth between summer and fall colors during the driving scenes to the beach and the flying scenes as they are approaching Neuschwanstein Castle.
Revealing mistakes: The haircut machine removes a lot of hair from the man's head. However, we do not see any hair falling on the white cape around his neck.
Continuity: During the shots of the haircut and the man chasing Mr Potts, we see a carousel operating in the background. It is running at full speed during most of the shots. In one shot, it is slowing to a stop. However, about 15 seconds later, we see it at full speed again.
Revealing mistakes: Caractacus turns the steering wheel of Chitty Chitty Bang Bang as a boat multiple times left and right but the car/boat clearly remains going forward.
Revealing mistakes: Thanks to English weather, some driving scenes had to be filmed in France. Thus, when the professor and the children first take Chitty Chitty Bang Bang for a drive in the "English" countryside, vineyards can be seen in the background.
Continuity: When Truly joins the Potts' on their picnic, she is wearing her leghorn hat with the scarf tied over it. Both times the family leaves the beach (in the story and after the picnic), she has her scarf but the hat is nowhere to be seen.
Continuity: When the soldiers are commanded to break down the toy maker's door, they force it inwards. When the toy maker goes to open the door, it opens outwards.
Continuity: As the family are preparing the table for dinner, Mr Potts casts the tablecloth over the table, covering the children. In the next shot, camera positioned under the cloth, the children are standing right next to each other. When Mr Potts takes the cloth off, they are standing at least two feet away from each other.
Continuity: When Mr Potts pushes Chity Chity Bang Bang out of his workshop, the tires become coated with sand and dirt from the dirt driveway. In the next shot, the car is in the same place, but the tires are clean.
Continuity: In the interior shots of the car when the Professor, Children and Truly are driving in the water at the beach, running away from the Baron's ship, the same mountain is viewed passing by two or three times.
Anachronisms: At the Baron's castle, Grandpa Potts says, "on behalf of Her Majesty the Queen," but both of the reigning monarchs during the 1910s, Edward VII and George V, were male.
Continuity: In the candy factory scene, the colour and cut of Mr. Potts' haircut changes right before the Toot Sweet musical number.
Anachronisms: As the spies cross the railway to set up the trap for Chitty Chitty Bang Bang, one track has concrete sleepers.
Continuity: During the birthday party for the Baron, Truly pretends to be a doll who dances on a spindle within an opened large box of mirrors. This box is visible on the floor for all the guests to see. When Mr Potts appears as his own form of a doll rising from a box, he starts to dance, the camera pulls back and Truly and her music box are nowhere to be seen. When Mr Potts goes over to sing his duet with her, suddenly Truly is visible again.
Continuity: When Truly first arrives with the children at their house she is wearing a hat...in various shots you can see the tissue stuffed in the ruffles and in others they have been removed.
Continuity: During the Baron's Birthday scene, Caractacus Pott's Doll character has big rectangular yellow shoes. He is seen running up the stairs with these same yellow shoes and when he sends Truly to search down one corridor, he still has these same yellow shoes. About 10 seconds later, after Truly finds the children in the tower, Caractacus appears with normal black shoes.
Continuity: When the spies are trying to catch the car under the bridge Mr. Scrupmtious crashes through their picture of the tunnel and into the truck but as the car goes through the picture you can see briefly that there isn't anything behind it. In the next cut they go right up the ramp and into the truck.
Anachronisms: In the opening sequence, the 4 races seen are the "1907 British Grand Prix", the "1908 French Grand Prix", the "1908 German Grand Prix" and the "1909 British Grand Prix". However, there were no British or German Grand Prix until 1926, in Germany the precursor to the Grand Prix was called the "Prinz-Heinrich-Fahrt" in 1908.
Revealing mistakes: In the opening sequence, during the French Grand Prix, car 42 is seen losing a wheel on a turn, followed by car 2A. There is an obvious jump in the editing where they combined the first shot of car 42 losing its wheel and the second shot of where it's been placed.
Continuity: The sound of Chitty's engine varies inexplicably between a normal-sounding motor and the "chitty chitty bang bang" pattern.
Continuity: The two spies carry a painting of the bridge and tunnel, wrapped onto a pole about half the length of the tunnel's upper wall. As it drops over the edge, the film jumps due to a cut. The pole suddenly spans the entire length of the wall.
Errors made by characters (possibly deliberate errors by the filmmakers): Although characters refer to the airship seen in the film as a "zeppelin" strictly speaking it is not. A zeppelin is vehicle with a rigid framework that contains multiple gas cells used to lift the craft into the air. Passenger compartments and mechanical areas are usually within the framework as well. The aircraft seen in the film would be classified as a (semi-rigid) airship.
Audio/visual unsynchronized: During the "Toot Sweets" number, some of the whistling is not in sync with the music.
Continuity: When Chitty switches to "boat" mode, after the tide comes in, you can see a stick or rod lifting up the propeller in the back. This rod is not present in any other shot where the propeller is visible.
Continuity: When we see Lord Scrumptious's car at the end of the movie, Potts has pulled up behind him, and both are facing the house. When we see Chitty flying around the house, Lord Scrumptious's car is inexplicably turned the other way.
Continuity: At the end of the Toot Sweets song Lord Scrumptious is on the right side of the camera near his daughter. But when they cut back to him a second later to make the last note he is on the left side of camera alone.
Revealing mistakes: When Mr. Potts is dancing for the Baron's birthday, in some shots, you can clearly see a thin wire meant to aid Mr. Van Dyke in dancing, while in others it has been painted out.
Audio/visual unsynchronized: When everyone is pushing the car, Mr. Potts looks over to Grandfather and says "comfortable grandpa?" His mouth movements do not match the dialog.
Revealing mistakes: When Truly runs into the pond, the car's engine is still running until Mr. Potts goes to get her. Plus the car was not far enough in the pond to prevent her from backing out.
Audio/visual unsynchronized: When the group is on the beach, having their temporarily goofy moments, the camera zooms in on Truly laughing loudly, when she was seen just grinning.