Revealing mistake: It's an obvious rubber dummy when Chavez cuts off Juarez's leg. (00:43:30 - 00:44:05)
Continuity mistake: Near the start, the bus approaches a curve in the road. 25 seconds later it's approaching the same curve, with the same trees. (00:15:25)
Continuity mistake: The guard rail disappears when the camera cuts then is back again before the bus goes off the road.
Factual error: When the group discovers the armoured truck in the woods, the officer says it's from the 1950's. After they open the door and are looking at the money, it looks brand new. Money sitting in the weather and heat would get mouldy and deteriorate after 50 plus years.
Continuity mistake: Alex stabs the hillbilly in the middle of his chest. Then it shows it come through his stomach. (01:20:50)
Continuity mistake: The barbed wire blows out the tire on the bus, but when it goes off the road the tire is undamaged.
Factual error: We see the prison bus catch fire after it crashes. But buses don't use regular gasoline. They use diesel fuel which isn't explosive.
Revealing mistake: When Chavez shoots the shotgun, he fires multiple shots without pumping it although it's a pump action shotgun.
Continuity mistake: When the hillbilly is passing the bus towards the beginning, for 3 seconds the truck completely disappears from sight then is back again. (00:22:20)