Factual error: In the opening scene, Tom Cooper ("The Man") uses a hatchet or tactical tomahawk to break through the front door of a house and then bludgeon to death his ex-wife and her new boyfriend. The boyfriend was whacked over the head one time and, after falling to the floor, two more times with The Man leaning over his body. The man proceeded to the adjacent room to bludgeon his ex-wife an unknown number of times. He was able to exit the house with no visible blood on his body or clothes, which would be impossible after bludgeoning two people with a hatchet or tactical tomahawk. (00:03:15 - 00:04:02)
Factual error: Babe Ruth is shown batting right-handed; in reality, he batted left-handed.
Factual error: Apex, played by Robert Maillet (a retired professional wrestler 6'11" and 350 pounds), forcefully slams Becky (played by 5' tall fifteen-year-old Lulu Wilson who probably weighs under 100 pounds) horizontally with her back hitting the ground from waist-high yet Becky is able to get up with no incapacitating injury that would be expected. Becky also manages to brutally kill him (as well as the three other neo-Nazis).
Factual error: The movie is set in the 80s (you can see tell for instance by the driving license of the old woman, which uses the 80s template and has a 1985 date), but the police plays the suicide tape on a Panasonic PV-4614, which is a late 90s model of VHR. Same goes for the Sony video camera used to tape the murder, definitely from the 90s. (00:19:00)
Factual error: The force with which Paul thrust the knife into John's stomach, plus the amount of time that the knife was digging into John's stomach as Paul suspended him against the wall, would cause a severe, incapacitating injury - or death. John should have been rendered incapable of even crawling along the floor, but he managed to get up soon thereafter and chase/ fight with Paul in the woods. Miraculously, John also did not seek or undergo any treatment for the stab wound. (01:14:14)
Suggested correction: Whether he should have died is entirely dependent on if he hit any major arteries or organs. Being stabbed in the gut is not an instant death sentence. Additionally, he's running on adrenaline and shock... there have been numerous times someone has been shot or stabbed and been able to run away or fight back in real life. Also, he literally fainted before he could seek out medical treatment, so I'm not sure what your comment about "miraculously" not seeking medical treatment is about. That's 100% conjecture on your part. And conjecture based on no evidence is not a mistake. Obviously he was given medical treatment after he passed out.
Factual error: The car's cigarette lighter pops out (ready to use), and Bo exits the vehicle carrying the still-lit lighter, glowing like a flashlight. Nearly a minute and a half later, the cigarette lighter is still fully glowing - but car cigarette lighters only stay lit for a much shorter period of time. (01:20:00 - 01:21:23)
Factual error: There is no giant crater in the middle of Naperville, IL. Let alone at the end of a runway.
Factual error: Joel is using a ham radio set to contact his old colony. A shot of the radio set shows it is set to "CW", which is Morse Code, but he is using voice. And the strength meter is on zero. It should be showing the signal strength. (01:24:00)
Factual error: The pilot is flying from the left-hand seat. Helos are flown from the right side. (01:23:00 - 01:25:00)
Factual error: After Maya Peters is brought into the recompression chamber because of an injury, the timer is shown counting down by hundredths of a second and skips from 1 to 0 without showing 0.99-0.01. (01:24:30)
Factual error: The calendar at the end shows 3rd September but the radio announcement is of the declaration of war which in the UK was 1st September.
Factual error: Renato and Asher could not just fly from the USA to Mexico; they'd need permission to fly and crossed a border without a passport.
Factual error: The movie is set in the year of production, but the "Grazia" issue on the magazine stand, featuring Gwen Stefani, is the March 31st 2016 one. (00:08:00)
Factual error: When Jung-seok is trying to get his sister away from her son, he begins shooting at a zombie that begins charging at him, and he falls on his back. Behind him, another zombie is shown with two other zombies lying on top of him. The zombie then manages to stand himself up, with almost no struggle and this also prompts the two zombies to fly off him. This move completely defies the laws of physics. This zombie should have the strength of an average man, and the two other zombies should be of equal, or at least somewhere near, the same weight as him. He was only using his arms and back to stand himself up, so realistically, the moment of him trying to stand up should have taken a lot more strength and a bit more struggle than what was shown. (00:08:13)
Factual error: It would not be possible for Kyle to see the woman breast-feeding - and certainly not as shown. Kyle was driving an SUV in the left lane and Swin was the front-seat passenger. When a car was approaching the SUV from the right-hand lane and the rear passenger area was approximately side-by-side at the SUV's passenger window (which is DARK-TINTED!), Swin looked toward the car, but his face was right in front of the frame around the windows - he would, at most, see the woman's left shoulder... and the baby was feeding "on the right." I doubt Kyle would have been able to see any part of the woman when he turned his head to look. At most (and this is unlikely given the height of the SUV), he might have gotten a partial glimpse of the woman's left shoulder and only after the car she was riding in was in front of the SUV's windshield (but still in the right-hand lane). (00:07:20)
Factual error: During one scene, a police siren can be heard in the background. However, this was 1960/1 and police sirens were not introduced into the UK until 1963. Before that, police cars had bells.
Factual error: After sleeping in and being late for practice, Jack is driving to the gym. It is supposed to be morning yet the shadows made by the sun show the sun is setting over the ocean and therefore evening.
Factual error: The Mahindra tractor in the film is newer than the 1980's setting. The tractor appears to be a '90's model. Mahindra tractors were not in the American market in the 1980's. Also, the "plow" used in the plowing scene was actually a "middle buster" plow. This plow would not be used at this stage or soil preparation. A turning plow would have been more accurate.
Factual error: The manner in which "Hamby" fell into the hole (or well) did not reflect physics or reality. He was running/chasing Joey and Matt. Whenever one walks or runs, one's feet are never straight down together (like standing), so only one foot could have been over the hole or failed to clear it. Hamby should have tripped and fallen over (face forward) with his upper body landing past the hole. This should have kept him from falling straight down into the hole (as if dropped from above the hole).
Factual error: It would have been impossible for the woman to have fallen into the hole on her own and get impaled by the stakes like she did. In order for the woman to land face-up on her back and get impaled by stakes straight up (perpendicular to the ground), she would need to be dropped from above the hole. Even then, the chances of getting impaled like she did would be around zero because her upper body, weighing more than her lower body, would fall faster and hit first at an angle. (00:14:33)