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 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 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: There is no giant crater in the middle of Naperville, IL. Let alone at the end of a runway.
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: 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: Trevor was driving ECTO-1 at over 60 mph. Podcast was driving the remote car and it was pulling away from ECTO-1. There is no way that the remote car could be going faster than ECTO-1, unless it was souped up, which it didn't appear to be when looking at it.
Suggested correction: There are plenty of RC cars on the market right now that anyone could buy that are capable of going 60+ MPH (the fastest can hit about 100 MPH). And if you take them apart, they don't look "souped up" at all. They just look like regular RC cars inside. Components don't have to look fancy to function fancily. You also have to account for the fact that the movie is highly fantastical, so there's no telling what kind of technology the RC car uses... for all we know, it could be nuclear-powered like the proton packs.
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.