Factual error: Considering the brightness of the fusion process, Dr. Octavius has to wear special goggles to be able to see it. Yet no one else in the room is wearing such goggles or seem hurt by watching the whole process, just as at the end of the movie. When welding something, no one can look at the arc that's created, as it would hurt his eyes and burn his retina; presumably, the fusion process would be brighter and more powerful than that, and so should have some kind of damaging effect on everyone's eyesight (except Spider Man's, maybe).
Factual error: When they're first entering the whaling camp, a penguin startles Miller. That penguin was a black-footed penguin, which is a bird native to much warmer climates. If that little guy had actually been in Antarctica, he would have died within minutes. (00:20:40)
Factual error: When Sam climbs outside the ship he grabs the frozen metallic pipes and rails with both hands - one half covered with a glove, one is bare. He has no problem gripping the cold metal and he can get his hands free every time. If the moisture froze before contact, his hands would be frozen too, so that can't be the reason.
Factual error: As the Hood approaches central London in Thunderbird 2, they fly through Tower Bridge and over HMS Belfast, approaching from the East. However the onboard display in Thunderbird 1 shows TB2 approaching from the West, somewhere over Hammersmith.
Factual error: When the plane is attacked by missiles, Helen punches a button on the cockpit console and a screen lights up that says "chaff". The next shot shows the rear of the plane with several burning items coming from it that are supposed to be chaff. However, chaff containers burst open into thousands of radar-reflective strips that are meant to confuse radar-guided missiles (see real chaff in the movie Air Force One). What actually comes out are flares that burn extremely hot to confuse heat-seeking missiles. While it might be suggested that we just never see the containers burst open, later in the missile chase we see the exact same items in view for a much longer time and they never burst open.
Factual error: When any character's automatic pistol runs out of bullets, the slide doesn't lock open. All the weapons shown are of a type which should.
Factual error: After the robots first attack New York City, a series of newspapers is shown. The German one is full of mistakes. It says "Sehr grosse metallic Maschinen stehlen stehlen Reserven." The word 'metallic' would be 'metallisch' in German and they would write robots as 'roboter'. 'Stehlen' (steal) is written twice. (00:15:15)
Factual error: The Great Exhibition was held in 1851, roughly 15 years before the film takes place.
Factual error: In the scene when the kids are on the boat hunting the snakeheads, Amber fires at least eight shots from a six shot, snub-nose revolver. Her friend then grabs the gun and fires two more shots from it.
Factual error: During the mess hall fight between the Sergeant and Horton, the Sergeant cuts the private's head with a cleaver and raises it "to show us". Horton's head is heard breathing and the breathing sounds react to the bug coming out of the head's mouth. I know the parasite bug makes the host's body quite resilient, but wouldn't the head still needs lungs to produce breathing sounds of that kind?
Factual error: In the scene where the people of Rejection/Perfection are preparing to fight the Dirt Dragons, Hereim loads the Punt Gun and puts a little gold piece in it (a percussion cap, containing a small amount of gunpowder used to set off the main charge in the barrel). He shoots at the Dragon when it pops up and misses. The next time he loads the gun, he does not replace the percussion cap (which can only be used once), yet he is still able to fire the gun with no problem and kill the Dirt Dragon.
Factual error: Sarah is claimed to be "ex-SAS" - but the SAS don't have any women. Maybe they will one day, but Post Impact is set in the present day.
Factual error: The garage scientists are setting up an experiment. One of the guys goes to tighten the terminals of a battery. He grabs one in each hand and proceeds to tighten them. If he had done that to a real battery he would have gotten the shock of his life. (00:12:00)