A lot of the scenes that involve the Ferrari 575M/550 Maranello do not portray its engine sound correctly - the sound is that of a raspy Ferrari flat-crank V8 engine, not the 575M/550's quieter, more refined V12.
When Syd shows up to clean the money for the Russians they go into a room where a woman is placing ecstasy tablets into little bags. The woman is not wearing gloves and would eventually overdose from absorption of the drug through her skin.
At the beginning of the movie, when the girl is messing around with Tapia's handgun, the gun supposedly goes off accidentally, yet the actress clearly closed her eyes just before the gun discharged, in anticipation, just before pulling the trigger.
Mike orders the speedboat driver to shut the engine down. His Spanish words are "Cierre el barco," which would never be used in any context. They mean something like "close the boat's doors." Proper orders would be: Stop (deténgase), stop the boat (detenga el barco), or shut the engine down (apague el motor). A police officer in Miami would be aware of these forms, given the large Latino population.
In the beginning of the movie when the helicopter takes off from the Coast Guard Cutter, the helicopter pilot can be heard calling the cutter with a callsign of 6003. The helicopter is clearly an HH-65 Dolphin and would have a callsign of 6503.
Much is made of the above ground swimming pool in Marcus' back yard. However, when Mike arrives at the house just before the "date interrogation" scene, an in ground pool is clearly visible out a rear door.
During the BBQ scene, when Mike refers to the pool as a wet dog wrapped in blue plastic, the dog is in the pool. When Marcus tells his dog to go fetch, the dog is suddenly on the grass, chained, and completely dry.
In the KKK shootout at the beginning of the movie, as soon as Marcus is taken hostage, the hostage-taker cocks the hammer of his revolver while putting the muzzle to Lawrence's head. In the next shot of the revolver, the hammer is not cocked anymore.
When Floyd Poteet is put into the trunk of the commandeered car, his head is pointing toward the passenger side. During the chase we see him in the trunk, and his head is pointing toward the driver's side. When he is let out, his head is pointing back toward the passenger side.
In the causeway chase scene just before the police car hits the boat, Mike hammers on the brakes of the Ferrari, if you look closely you will see that Marcus is now wearing a white shirt with suspenders, instead of a black shirt.
When Syd is driving down the exit ramp she drives down about two levels before she kicks the door open and knocks the guy holding on off with the door. His arm is stuck in the window because she rolled it up on him, but as he starts his fall he is holding on to the frame of the door with no damage to the door.
As the chase begins after leaving the parking garage the cars make a right turn. Following the SUV are a orange Chevy Nova, a purple Camero, and a blue Trans Am, but instead of the Trans Am we see a black Chevelle then the Ferrari. In the chase we see the Nova, Trans Am, Camero, Chevelle and a yellow Challenger that comes and goes between shots.
When Syd is driving down the exit ramp you see her drive to the second level down with the nova close behind. She drives at least to the third level down as the person in the nova shots at her, but we see the nova back at the top level.
Just as Syd gets to the intersection where she has a wreck and a green light (two cars running a red light), a man just gets across the street, the next shot shows a man and a woman getting out of the way, and the air bag does not work, and the bullet holes on the side are gone.
The SUV that Syd is driving is severely damaged in front when it hits a car broadside at the intersection, then is significantly damaged in the rear when the other dozen or so cars pile up behind it. We then see a "fresh" SUV trying to plow its way out of the intersection with no damage at all except the driver side door missing.
When Mike turns up at Marcus's house he's driving a 575. At the start of the freeway chase when the guy who fell down from the car park, the Ferrari in shot when he lands is still a 575, but on the freeway chase this changes into a 550 Maranello.
In the causeway chase, the first car that is hurled off the truck changes. When the bad guy shoots the chain to let the car go, the car is a Buick, but the car that rolls off the truck into oncoming traffic is a Pontiac Grand Prix.
At the end, when Mike and Marcus are in the pool, you cannot see Marcus wearing any neck chain. After they fall into the lake and they are singing, you can clearly see him wearing a neck chain with a small cross.
The remote controlled car is seen under the truck as it enters the compound yet in the next scene it is not under the truck. Then we see the view from the remote controlled car and it is still under the truck.
In the shootout in the Haitian hideout, we clearly see the guy in the yellow t-shirt shot in the head. However, seconds later, we see him walking on set and crouching down, reflected in a mirror over Mike's left shoulder just as he's shooting the tear gas canister.
When the captain is entering his office, he takes off his shoes. They are facing his office, and the left shoe is on its side. However, after he kicks the trashcan, a shot of the shoes shows them both upright on their soles facing away from the office.
When Mike is driving towards the Haitians whose cars are piled up, he brakes and the car turns. As the car turns and Mike pulls out his gun, a stunt driver is briefly seen in between shots and it then cuts to Mike's face immediately after.
In the ice van chase sequence, just after the ice van decapitates the dead body the camera dollies past another camera unit, also on dolly, and the 1st AC, camera operator, camera and dolly are visible.
One of the early scenes is supposed to be "Amsterdam Harbour". In reality Amsterdam Harbour is small and doesn't handle large ships or have the wharves featured. Rotterdam harbour on the other hand handles more cargo than any other port in Europe.
In the harbor, someone is making a phone call from a "public" phone. The phone is clearly visible, but it isn't a phone that's used in the Netherlands. There are green public phones, but the design and logo are different. Also, there is a label on the phone booth which reads "Dutch Telecom". This company does not exist at all. The correct text would be "KPN Telecom".
When they arrive at the base at Guantanamo, Tapia tells the cops that the Americans can't help them because they are still on Cuban soil. The Marine tells them that they are standing in a minefield. At Guantanamo, the minefields are INSIDE the fence, on the American side - not on the Cuban side. Furthermore, there is no hard wall surrounding the U.S. Naval base at Guantanamo - it is all chain-link fence.
When Marcus comes out of the shower after accidentally ingesting two ecstasy pills, he tells Mike and Captain Howard that he has an erection. Ecstasy, like all amphetamines, makes it harder to get and maintain an erection, so despite the drugs 'loved up' effects a spontaneous erection would simply not happen.
The black Chevelle used by the Haitians is not a real SS396 - this was a Chevelle Malibu hardtop coupe with the SS396 badge bolted in the rear center panel and front grille. In reality, Chevrolet did market the Chevelle Malibu SS for the 1964 and 1965 (to 1966 in Canada) model years only - no Chevelles (with the upscale Malibu model lineup) produced during the 1966-68 model year ever wore SS badges until the 1969 model year where the SS package was reduced to an option package instead of a separate model for all Chevelle 2-door vehicles during the 1969 model year (either as the base 300 Deluxe pillared coupe or hardtop) and for all hardtops for the 1970-72 model year, regardless of the trim level. The real 1968 Chevelle SS396 hardtop coupe (including the convertible) has the 'Chevelle' script on the front header panel, with no script emblem next to the passenger side taillight, not to mention the 13837 VIN prefix (a real 1968 Chevelle SS hardtop will have the 138 VIN prefix when authenticated; restored specimens, especially numbers matching (defined as 100% original with all stock factory components) usually run around $25,000 - $50,000).
A mid-1980s Ford LTD Crown Victoria taxi is seen during the causeway chase. This vehicle is at least 12 years old. Municipal regulations would prohibit a vehicle of this age (over six model years old) from being used as a taxi.
During the car chase scene, when Mike and Marcus do a 360 in their car, you can clearly see it is a Caucasian stunt driver with dark sunglasses doing the actual 360 spin. Once that is done and the car is accelerating forward, it is Mike back in the driver's seat.
During the shootout at the Haitian house, Mike simultaneously ejects the magazines from both Glocks he's using. As the magazines fall free of his handguns' magazine wells, a live round also appears to fall (following the magazine) from the weapon in his right hand. Since both handguns appear to be in battery at the time (and not actually empty, in which case the slides would be locked back), there should be no loose round falling from the weapon. Apparently that doesn't matter, though, because immediately after the next cut he's already bangin' away at the bad guys without any evidence of a reload.
Just as the semi-truck gets on the highway, the truck hits barrels of water near the exit guardrail. If you look in slow motion, the barrels explodes just as the truck is about to hit them. They just explodes without the truck hitting them.
The goof items below may give away important plot points.
In the final confrontation with Tapia outside Guantanamo Bay, Marcus uses a two-tone SIG 226 and is clearly shown holding it when he is standing with his hands in the air. The moment he begins his roll, he appears to be holding a different weapon. When he comes up to take the shot on Tapia, the gun is clearly shown to have changed into a Glock 19.
Just after Tapia's mansion blows up, Mike, Marcus, and Syd make their escape in a yellow H2. They are in Cuba, but you are clearly able to see downtown Miami high-rises form a shot through the windshield of the vehicle while they are dodging Cuban Army fire.
During the raid on Tapia's mansion, Tapia's daughter is placed in a closet, supposedly to keep her safe. The young girl never appears to leave the house, in spite of its complete destruction. It can be assumed that she was simply forgotten.