Continuity mistake: When the good guys steer the small robot vehicle underneath the bad guys' car, there is a shot without the robot under the car, but in the next shot it is there again.
Revealing mistake: When Mike and Marcus are chasing the Haitians, when Mike does a 360 degree spin and then fires his UMP-45, for a split second when he is spinning if you look into the window, you can notice that the driver isn't really Mike.
Continuity mistake: During the shootout in the street, Will Smith does a sharp turn while shooting at the Haitians and ends up killing one Haitian who falls back on a car. A few shots later at a different camera angle, you see the same Haitian man get killed and fall back on the hood of a car.
Continuity mistake: In the White Power vs. Blue Power scene, Mike jumps and shoots a bullet in slow motion. While following the bullet, you can see one man take 3 or 4 steps, before the bullet hits Marcus's ass and eventually the guy's neck.
Continuity mistake: When the Haitians are on the highway, one of the cars fall off and is dragged by a chain and it hits the large black Ford beside it, with just a bridge wall. Then when the thug (the one who says, "Jesus f***") is shown inside the car, there is a Maersk Sealand vehicle there.
Other mistake: When Mike goes to Marcus's house to apologize, as Marcus lets Mike in and they walk through the house you can see the corner of a very nice built-in pool through the glass doors, even though a large part of the beginning and the end of the movie take place in Marcus's '$3900' portable pool and its subsequent replacement.
Continuity mistake: When Syd gets out of the back truck after the high speed chase, she has blood on her nice white suit (probably since the guy next to her in the car was shot in the head). However, when she gets out to talk to Mike, her suit is clean and white again.
Continuity mistake: After Syd is chased down in her black truck with the money in it, she meets up with Mike and Marcus. As she is talking to Mike, her bangs change positions. They go from down, to put up.
Factual error: When Syd throws the pistol to detonate the landmine, nobody in the nearby vicinity seems to be injured except one 'bad guy' despite the fact that many modern anti-personnel mines project shrapnel to a radius of 30 meters.
Revealing mistake: When Mike is fighting one guy in the Metro Rail and they go through the window, you can see a cable going down the pants near the ankle of one of the stunt men jumping out.
Continuity mistake: In the final chase scene, the yellow Hummer starts out with an open sunroof. As it barrels through the shantytown, interior shots of the Hummer show it with a large overhead bank of storage compartments, while overhead shots show the sunroof. When the chase finally reaches Gitmo, the Hummer once again is shown with an open sunroof.
Continuity mistake: During the chase down the hill, through the shanty town, the bad guy's blue Land Rover's hood is shown smashed and bent upwards several times, but when they emerge at the bottom it is perfectly normal, and in the latched down position.
Continuity mistake: Near the end of the shootout scene in the pink house, Mike starts to bring his gun up to shoot the Haitian through the wall, and the gun is empty - the slide is back. When the camera changes the slide is forward - indicating the gun has bullets inside. He then shoots through the wall killing the Haitian.
Factual error: When Mike and Marcus are fleeing from the bad guy they arrive from Havana to Guantanamo Bay in about two minutes, this is actually a 10 hour drive.
Continuity mistake: When the Haitians have a shootout in the intersection, you see Mike do a 360 degree spin and then shoots the first Haitian in the green, but moments later you see Mike shoot him again. He was already dead.
Revealing mistake: In the highway chase scene, when the car's been shot from the outside, you can see that there is only one person inside.
Visible crew/equipment: Just after the chase scene with all the bodies falling out of the black van, you see one of the bad guys jump over a fence while he is running away, as he lands you can see the mat that he is landing on to soften the blow.
Other mistake: When Marcus and Mike are in the Haitian penthouse and are "questioning" the dead, Marcus asks the dead man for info, he is slumped over but is obviously breathing.
Continuity mistake: In the final shoot out Mike is wearing Oakley M-frames with a clear lens, but the lens shape changes three times during the course of the fight, from the sweep lens, to the strike lens, to the heater lens.
Visible crew/equipment: In the last scene of the movie where Mike and Marcus are both in Marcus's "new" pool, as soon as the pool collapses into the ocean, you can see in the background a crew member standing there as if he was there to "break" the pool and in a quick shot back to where the pool was, he is gone.
Continuity mistake: In the "white power vs. blue power" scene when Mike yells "Marcus!", he fires both his Glocks. But in the following slow-motion shot, the bullet from the gun in his left hand is nowhere to be seen, although you can see he fires them in the same direction. In fact it probably would have hit Marcus, while the bullet from Mike's right-hand gun scrapes him in the bottom-cheek.