Factual error: In the beginning of the movie, the explosion in the Holland Tunnel is caused when a car crashes into the trucks carrying toxic waste barrels. In real life, it is against the law for vehicles carrying hazardous chemicals to use any of the tunnels. Even if the drivers didn't know this, which is highly unlikely, they would have been pulled over by the Port Authority cops as soon as they headed for the entrance - lots of yellow barrels would be a bit suspicious.
Continuity mistake: When Kit rushes to a table and scrambles everything off it to pick up a large object to stop the fan, the timer in the background says 28 seconds. But when Kit walks up to the big fan to slow it down we see the timer again and it says 19 seconds, but only two or three seconds have passed since we last saw the timer so it should be at about 24 or 25. (00:39:40)The-Immortal
Continuity mistake: When the tunnel caves in as a result of the explosion, the cars about to enter it come to a stop in almost a straight line. When Stallone gets out of his limo, the cars are now scattered everywhere. Then, when he goes back later to the collapsed entrance, the cars are not only in different positions, but some have changed in make and model as well.wizard_of_gore
Factual error: Even if the survivors were in their vehicles, a raging inferno like that would seriously damage their skin. Even if a vehicle can protect you from being set on fire, I think the chances of being skin burned and blistered are especially high. First of all, the prison bus had those open diamond holes on the side of the bus. Also, I believe someone's car window was open, so they should have been set on fire.