Continuity mistake: When Wyler and Susan are escaping in the van, the windscreen is shattered and Wyler punches a hole for visibility. In all further shots of the van, the windscreen is obviously intact with the shattering merely cosmetic.
Continuity mistake: When the German agents dig up Gromek's buried motorcycle and are pulling it out of the hole in the ground, it is completely clean and in perfect condition with no dirt, scratches, or dents on it.
Continuity mistake: When rescuing Burt Lancaster whilst tied upside down in the canyon, watch the two bandits behind Lee Marvin when he jumps down, as they retrieve the rifles stood up against the rocks twice.
Continuity mistake: When he's called in to see the Captain, Montag wears his wristwatch turned inward (with the face resting over his pulse point). Seconds later, though he hasn't touched it, the watch has rotated itself 180 degrees and is now on top of his wrist. (00:26:05)
Continuity mistake: Brutus, the Great Dane, is shown crawling from right to left on the ground near the edge of the planter. After a brief close-up of Mark, his owner, Brutus is shown crawling from right to left in the exact same spot again. (01:16:10)
Continuity mistake: Robert Redford's shirt is heavily bloodstained in the close-ups after he gets beaten up, but has just a couple little blood drips before and after, when Alva helps him get up. (01:09:25)
Continuity mistake: The close up shot of Herman's hand shows him removing his hand after activating the switch to the secret passage, but the long shot of him and Grandpa shows his hand still on the switch.
Continuity mistake: When Sir James and Sylvia arrive by coach at the Tompson home, the driver carries their baggage to the door. He is played by a younger actor with darker hair initially, but when the shot changes to the door of the house, he is suddenly being played by a noticeably older actor with grey hair yet wearing the same clothes and still carrying the same bags.
Continuity mistake: When Alfie helps a woman out with a doctor, it's raining, but when Alfie goes outside the rain has stopped and there's no water on the ground.
Continuity mistake: At the beginning, Aldo escapes at precisely 3:00. But when driving away, they pass a store-front clock which reads 12:30.
Continuity mistake: When Matt and Suzie get into Suzie's black convertible there's no rear view mirror, but then a mirror appears, disappears, and reappears. Then, when they've switched cars its rear view mirror also plays the vanishing game while they're still being chased.
Continuity mistake: Didi is wearing a long black negligee when Pepe throws her into a bubble-filled bathtub on a movie set. When she gets out of the tub and runs off, the negligee has disappeared and she is covered only with bubbles.
Continuity mistake: When the four kids uncouple the coach from the engine Carole is wearing trousers. The stationmaster tells them to stand clear as the engine pulls away, in the first shot of the children after the engine has gone Carole is still wearing her trousers but in the second shot Carole is now wearing a skirt.
Continuity mistake: The car Joey gets into at the moonshiners is a white 2 door 1957 Chevrolet, When he is driving along the winding road the car is now a white 1955 Chevrolet, but when he is run off the road the car that goes down the embankment is the 1957 Chevrolet again.