Deliberate mistake: While Donnie is training at Front Street Gym, when Rocky repeats, "One step at a time, one punch at a time, one round at a time," the closeup of two children watching from outside the ring is a flipped shot, note the backwards Nike swoosh logo and Everlast ring rope spacer. (00:53:05)
Factual error: The year is 1952. In an exterior scene, Saoirse Ronan is seen on a street in Brooklyn. In the far background, a red "WALK/DON'T WALK" sign is flashing. This type of sign was only introduced across NY in the late 50s.
Factual error: There seem to be modern "Walk" and "Don't Walk" signs at each intersection. This film is supposed to take place in 1952. Also it is mentioned there are "Stereophonic" consoles in the motel rooms. Probably would not find those until at best the late 50s.
Continuity mistake: Near to the end Gabriel Oak leaves the farm and as he leaves his cottage he is dressed in a white shirt, cream trousers and a dark waistcoat. When Bathsheba Everdene catches up with him on the road he has completely changed his clothes and is now dressed predominantly in blue.
Factual error: Herman Melville interviews whaling survivor Thomas Nickerson in Feb. 1850. Nickerson tells him "I heard a man from Pennsylvania drilled a hole in the ground recently and found oil." Oil was discovered in Titusville PA in 1859.
Revealing mistake: Right at the beginning of the film "rain" is falling on the car the camera shows before it moves to focus into the tunnel. However, look at the cars behind it, they aren't wet at all and it's visibly sunny. It's water being poured onto the car directly in front of the camera.
Continuity mistake: The full table of scores for the contestants is visible before the Carl Hayden High School students actually did the task (they were the last group to do it). (01:25:20)
Continuity mistake: The getaway car changes from a Peugeot Partner (1996-2003) to a Citroen C3 Picasso (2013-2017). (01:35:30 - 01:36:05)
Revealing mistake: When the twins are born neither baby has an umbilical cord attached to them. Also the baby girl has a bellybutton.
Factual error: When he is in the restaurant and looking at the security feed, he does a who command when it should be "whois". Also the IP is incorrect - the 3rd octet is 265, despite the maximum possible value being 255.
Factual error: Near the end, Jackie Chan's vastly-outnumbered forces resort to throwing stones to somehow utterly destroy a phalanx of Roman legionnaires in close-quarter combat. This scene flies in the face of what we know about Roman military superiority in the time of Tiberius. The Roman Army was the best-trained, best-organized, best-equipped military force of the Ancient World, specializing in tireless close-quarter combat and impenetrable defense. To suggest that Jackie Chan's frantic and disorganized group of fighters (throwing stones by hand) might overcome Roman legionnaires is like suggesting that cave men might overcome the modern U.S. Marine Corps.
Visible crew/equipment: When Bryson and Katz are getting onto the Greyhound bus, a guy in a fluorescent jacket can be seen holding traffic up in the distance whilst the scene is filmed.
Other mistake: Ma and Jack bake a cake, but there is no way of doing this as they have no oven - only a work top hob and a grill.
Factual error: Jack is addressed by everyone as 'Airman', not as the correct 'Corporal'. The rank of Airman does not even exist in the RAF.
Continuity mistake: At the beginning while Laing goes to the pool area he says hi to the pregnant woman in the water, and there is a girl beside her who switches side from shot to shot. (00:15:30)
Continuity mistake: When Carlos goes back to Lacey's home, when she opens the front door she is wearing a long beige cardigan and a green coat. In the next shot where she hugs Carlos she is no longer wearing the coat. (01:47:45)
Continuity mistake: After the 5th round the amount of blood on Billy's left eye changes between shots while he is on the corner.
Continuity mistake: Right at the beginning of the movie, the Sergeant pulls his jeep over and headbutts a prisoner who is carrying a Danish flag, seizing it. In the following shot he has his arms open and shoves away another prisoner, no flag in his hands. Next shot, he's standing by the bleeding prisoner, folded flag in hand. (00:02:25)
Other mistake: Whilst the main character is having a 'talk' with the general, the world clocks on the way show 3:50 on time 1, and 3:49 on time 2. (01:25:10)
Continuity mistake: In the locker room scene after Tony injures his knee, Tony walks outside the room crying and he then throws his helmet against a wall, causing the chin strap to fall off onto the floor in front of the the doors. When the coach walks in through the door, the chin strap has disappeared. When the coach and Tony hug, look just behind the coach's right arm. You can see a quick glimpse of the chin strap back on the floor where it was before.