Revealing mistake: During the freeway chase, they throw a white Malibu off the truck, but when it lands on top of another car it doesn't even touch the car, but bounces right off. (00:35:45)
Continuity mistake: In the freeway chase scene watch the boat's engine compartment cover. When the Mack truck knocks it off its trailer the lid comes off but then the boat gets hit by the car and turns perpendicular to the road and you see it come off again. (00:36:25)
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Visible crew/equipment: At the end of the MacArthur Causeway chase, there is a shot of a police car spinning on its underside. A camera is seen sliding on the road, moving offscreen. (00:36:45)
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. (00:37:00)
Visible crew/equipment: After the major collision on the highway with the Haitians, Mike's Ferrari pulls up to the dock, and when you first see Marcus open the car door you can see many crew members in the reflection of the side mirror. (00:37:20)
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. (00:37:35)
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Continuity mistake: When Joe Pantoliano is circling "tactical narcotics team" after the car chase, check out the circle. When he draws it, both ends meet nicely. Next time we see it there's a curve at the end of one line, and the next time they meet again. (00:38:30)
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Continuity mistake: When Marcus and Mike get back to the station after the chase, the captain underlines "tactical" poorly, missing most of the word. When they walk to the captain's office, the underline is now visible under most of the word, obviously a different line. (00:40:10)
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)
Audio problem: In the drug dealer's attic, when he shoots a rat, there is a very long echo - as there would be outside - for example in a forest. But inside, the echo would be much, much shorter. (00:43:25)
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)
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)
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. (00:51:25)
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. (00:52:45)
Other mistake: Marcus and Mike go into Phat Audio Video to review the video camera that they retrieved from Zoe Pounders' house. Police stations have video equipment, they could have watched it, there. For that matter, they could have watched it at Zoe Pounders' house. (00:53:25)
Suggested correction: All that doesn't contribute anything to the plot. The point is they watch the video, the rest is intentional for comedy effects. Not a plot hole at all.
Audio problem: The sound is off when Marcus and Mike are in the video store talking about "The Box". It's most visible during the over the shoulder shot of Mike miming putting the word "flaccid" in the box. Mike's mouth is CLEARLY not in sync with the words that you hear. (00:56:35)
Deliberate mistake: During the car chase in the Cadillac, the van being chased crashes through a concrete block wall. Even if you can look past the unlikelihood that the van would even be drivable after going through, it is impossible that it would come through without any damage. Surely the windshield would be cracked, the headlights broken, etc. This was obviously not done with a real brick wall and they didn't think to damage the van before running it through the wall. They do show a dent and a messed up grill in a closeup later, but the damage doesn't match the wall scene. (01:02:10)
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Continuity mistake: When Tapia is talking to the guy about severing his head then threatens his family, he takes the pictures out of the box and the pictures are facing Alexei, but in the next shot they are facing Tapia, as he turns them around to show him. (01:05:45)
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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: Just before smashing through the wall in the Cadillac vs. funeral van chase, the van apparently hits some vegetation before smashing through a fake brick wall. The attached vegetation changes between shots and is completely missing in some. (01:24:15 - 01:27:00)