Corrected entry: When Riggs confronts the South Africans in the Embassy, he beats up two of them before aiming his gun at Arjen, Vorstedt, and the two other remaining South Africans. However, after he shoots the fish tank, there are three South Africans scrambling to pick up the fish as Arjen directs them, and Vorstedt was not one of them (he remained standing ahead of the tank). No-one else could have entered the room, and it isn't plausible that either of the two that Riggs viciously beat would've recovered so quickly.
Corrected entry: Right before a chase ensues near the stilt house, at the point where the hotel waiter hijacks a flatbed truck at gunpoint, notice how its passenger side door has no mirror (all it's got is a metal assembly, no mirror). But moments later when Riggs climbs along the truck and tries to get a better look him, he does so through a passenger side mirror. How did it get there in the midst of a chase?
Corrected entry: The building used for the South African Consulate is actually a bank. When Roger and Leo are thrown out, the glass front doors are marked with winged logos and consulate lettering that is dark in color, but one door has additional white lettering that says "Open to Serve You, Monday - Thursday 9am-4pm, Friday 9am - 6pm"- rather out of character for a consulate.
Corrected entry: When Riggs emerges from the water after he has freed himself from the straightjacket he knocks out the two bad guys using both his arms. This wouldn't have worked as he had to dislocate his shoulder to wiggle himself out of the jacket, and he relocates it only after the fight.
Corrected entry: There's no way Riggs could have got to Rudd's building before Rudd did. Given that Rudd had a head start (after running the red light), Riggs somehow managed to not only beat him, but find a parking spot, steal a sign and be there waiting, while Rudd was doing a straight drive there. There's simply no way.Gavin Jackson
Corrected entry: When Riggs is on the recovery truck, he drops his gun and it lands on the left side of the road, but when Leo picks it up after Roger stops the car, its now on the opposite side of the road.
Corrected entry: When Murtaugh meets up with Riggs before he destroys the stilt house, you hear the tires of both their vehicles screech as they stop, yet they are on a gravel road.
Corrected entry: When Riggs is thrown underwater he dislocates his shoulder to free himself, and as he does this he properly just rests his right arm at his side. However, once the jacket thing is off, he spots Rika and frantically swims to her. When he does this he uses both his right and left arm. After dislocating my shoulder three times, I can guarantee you it's nearly impossible to swim like he did with even the lightest degree of a dislocated shoulder. It's not a matter of being able to deal with the pain of moving your arm (which at that moment Riggs probably could've done), but the fact that a dislocated shoulder doesn't allow the arm to flex/move or rotate much farther than from your side. This is also made apparent as a deliberate 'mistake' when he climbs up and kills both men, then reduces (relocates) his shoulder. A dislocated shoulder pretty much limits most movement of said arm.
Corrected entry: In the beginning, when Riggs and Murtagh are chasing the BMW the red police beacon can be seen flashing inside the windscreen. When it then cuts to a conversation between Riggs and Murtagh inside the car and you can see the beacon but it's not on. Then it then cuts to the outside of the car and the beacon can be seen flashing once again.
Corrected entry: Murtaugh and Riggs are partners since the first movie, they've been working cases together, drive together, Riggs has extra clothes at Murtaugh's house and yet Riggs had no idea that Murtaugh was having construction done, asking if it was an oxygen tent. Murtaugh is showing Riggs the garage and hobby room as if he'd never discussed it with him before. And it's not as if they just broke ground, the job is halfway complete, with the frame up and all. Obviously the dialogue was done for the viewer, not for the characters.
Corrected entry: When Danny Glover is thrown out of the South African's office, one of the security people turns his hand as if to lock the door. Yet for the rest of the scene, the door is shown the whole time and there is NO lock on the door. This apparent lock-free policy is keeping a whole heap of protesters outside.
Corrected entry: When Murtaugh and Leo pull up to is house he tells Leo to stay in the car and don't go anywhere. Leo I think he says he's cold so Murtaugh turns the car on. While Murtaugh is in the house the bad guys jump in the car and the guy in the drivers seat starts the car when it was already running.
Corrected entry: When Riggs is explaining to Murtaugh's wife how he found out his wife was killed, this is not how it happens (in the US). No police department would come upon a wreck and not personally (or have the agency where the officer lives) notify Riggs of his wife's death. The police community is too close. Maybe small town PD's don't but LAPD has directives on how to handle family member deaths for officers. Even if Riggs weren't an officer, no police department or hospital or doctor notifies anyone's immediate family of a serious / tragic death by phone and then asks them to drive to the morgue to "sign the body out" (identify the remains). They would tell them to come to the hospital, or wherever, making sure they have a ride, and then tell them about the death in person.
Corrected entry: During the opening car chase, a car pulls out in front of Riggs and Murtaugh and blocks their path. Just before it pulls out, the headlights on Murtaugh's station wagon flash which is the cue for the other stunt driver to move.
Corrected entry: In the opening scenes, Murtaugh and Riggs are pursuing and keeping up with a far faster BMW 635i in a big heavy Oldsmobile Delta 88 Wagon. Anyone who knows anything about cars knows that there is NO way a Delta 88 wagon could keep up with a BMW 635i in any pursuit.
Corrected entry: This film was banned in South Africa in 1989. The trailers played on TV but after about a week the movie disappeared without a trace. It was eventually shown on TV in 1998.
Corrected entry: In the scene where Murtah is fighting with the two guys in his garage he shoots them with a nail gun. These nail guns run on compressed air, yet there is no air hose attached to the gun. You can see this when he raises the gun to shoot the guy through the plastic.
Corrected entry: When Riggs is being attacked at his trailer, his MP-5 continues to blaze away. The MP-5 will empty a 30 round magazine in about 3 seconds.
Corrected entry: The equipment that's supposed to protect Riggs and Murtaugh from the ill effects of the loo bomb is more than insufficient: just a vest, no helmet, no face shield, and nothing for Murtaugh's rather endangered private parts. Furthermore, if the mechanism was triggered by the removal of Murtaugh's weight from the seat there would certainly have been a way to simulate the weight mechanically.
Corrected entry: In the scene where the toilet blows up, smashes through the window and hits the station wagon, it is clear that the windshield on the car has been broken already and duct taped in place.
Corrected entry: At the docks near the end of the film Riggs shoots a guy multiple times and says names Shapiro, Wyler, Cavanaugh, Rika. When his saying Wyler's name his mouth is closed.
Corrected entry: After he's been thrown into the water, Riggs dislocates his left shoulder, but hits the car with his right shoulder to relocate it.