Continuity mistake: When Mike and Marcus are running from the Miami Bank in pursuit of one of the bad guys, Mike's pant leg rises and you see he has on white socks. In the next scene the bad guy and Mike are struggling on a train, once again Mike's pant leg rises, but this time he has on black socks.
Revealing mistake: In the morgue scene where Will Smith and Martin are checking out the "fat does" for evidence, Will asks Martin to check a coffin for clues. As Martin looks through the coffin there is a shot of money that he finds inside the casket. If you look closely at this shot, the top bill in the bundle of hundreds reads "to be used for motion pictures only."
Suggested correction: May have been fixed in the DVD - I couldn't see anything untoward.
Factual error: In the chase down the hill, in Cuba, there is an office with a sign "Alcaldia" (City Hall in Spanish). In Cuba the local government office is called "Poder Popular" (People's Power). (02:12:50)
Continuity mistake: In the highway sequence, you see a white car being pushed off from the top deck of the trailer, by the Haitians, and in the next shot it manages to land upside down. Also, the Haitians on the top deck of the trailer, are now gone. (00:34:15)
Other mistake: During the attack on the house of Johnny Tapia in Cuba, a Cuban soldier fires an RPG, but misses his target and hits something else. The soldier comes out and disappears one second after impact. You can still see his rifle, but he is gone. (02:04:55)
Continuity mistake: When Mike and Marcus are getting in trouble after the car chase on the bridge, watch the incense burning on the captain's desk; it keeps getting longer, shorter or whatever combination. (00:41:05)
Continuity mistake: In the final steeplechase scene, with the Hummer and the truck barrelling through the drug-shacks, you can see the Hummer hit the same shack, with a black barrel sitting on top of it, 3 times (at least). Twice from the same angle, and once from another. (02:14:30)
Visible crew/equipment: When Mike and Marcus are shooting in the pink house, just before Mike is about to throw a gas canister in the room behind the door, look carefully at the tilted mirror on the wall opposite. You can see a crew member kneeling down to get something and then coming back up. (00:49:05)
Continuity mistake: When Mike and Marcus go to Captain Howard's house after they have visited the morgue, Marcus is tripping on x and drinks the water out of a vase of flowers. He drinks pretty much all the water, but when he puts the vase back down on the table, it is full again. (01:50:10)
Continuity mistake: When Marcus and Mike are in Tapia's house to eliminate the rats, Mike jumps through the kitchen window. While doing that jump, he loses his "Zook" cap, but in the shot when they are sitting in the car, he has his cap back on. (01:07:25)
Continuity mistake: During the van chase, a construction worker dodges the oncoming van by jumping to the left. In the next shot, he's shown jumping to the right. (01:24:40)
Continuity mistake: During the Hummer chase near the end, the road goes from being dry to wet to dry again.
Revealing mistake: In the first big chase scene the bad guys make the cars roll down from the car transport truck to block the street. You can see that there are stunt drivers sitting in some of those cars to keep them under control. (00:34:20)
Factual error: During a shootout in a house of the white-dredded Haitian, there is a moment when Will Smith shoots the bad guy right in the eye. The camera enters the barrel of his Glock, and everybody can see the regular cylinder barrel with grooves. But barrels of Glocks always have polygonal rifling - the barrel channel seen is hexagonal, not cylindrical. (00:51:00)
Factual error: When the guys pop out of the tunnel and start shooting at the guards it shows bullets going into the pool making big splashes. At the angle they were shooting from the bullets would barely skim the water making very little splash if they even went into the pool at all. If these were true ex-Deltas they would most likely have a little better aim than just spewing a line of bullets until they hit someone. (02:07:40)
Continuity mistake: When Mike is carrying out Plan B and the house explodes, in the far bottom right you can see the Hummer drive away, but in the next shot it's driving out of the garage. (02:11:25)
Audio problem: In the shoot out in Tapia's new home, one of the Americans is shooting a MP5SD at the men on the balcony, but the weapon sounds like an M4. (02:09:05)
Revealing mistake: During the first gun battle, Mike blows up a bridge with two men on it. When they go flying, the man on top is attached to a very visible wire that lifts him up and sends him flying. (00:08:35)
Continuity mistake: In the Cadillac chasing the mortuary van, as they break through the fence gate heading towards the railroad tracks for few seconds the Cadillac has a front license plate bracket, most noticeable when the water tower is directly in the background. The rest of the chase, it doesn't.
Revealing mistake: After Mike starts shooting at the KKK meeting he rolls on the ground as he's firing at klansmen, and when it cuts to shots facing those klansmen, the stunt springboard is visible in two consecutive shots. (00:08:30)