Revealing mistake: As soon as Tony shoots Hector out on the street, the shot changes angles to see Hector's body fall face down. It may be a stunt-double because this person's hair is completely different from the actor playing Hector. Before Hector is shot, his hair is completely combed. As his body is falling, his hair is suddenly completely uncombed (To me it seems the double's head is bald on top and with a tiny pony-tail, but that's probably just me). After he falls his hair seems back to being combed-over.
Continuity mistake: In the scene where they are having dinner at the Babylon Club, the waiter brings them champagne and when they all raise their glasses to toast, Tony has a cigar in his mouth. The camera cuts away and then cuts back to Tony about to take a drink of champagne and the cigar is now gone. There was not enough time to take out the cigar. A second later the cigar is back.
Revealing mistake: At the end of the infamous chainsaw scene Tony takes an automatic pistol away from one of the Colombians after a struggle in the shower. Tony pushes the Columbian away, extends the pistol and fires a round. You see the gun's hammer drop and the muzzle flashes, but the slide does not cycle, a clear sign that blanks were being used.
Continuity mistake: In the scenes after Omar is killed in the helicopter, Sosa and Montana are talking business gangster style. Montana's body shifts positions all the time as the cam cuts, one time he is standing with his arms akimbo, next he is bringing his hands to his hips, and all the time his body's angle is shifting.
Continuity mistake: In the motel chainsaw scene, before the Colombians pull out their guns, there are several food containers, a bag of cookies and a soda can lined up neatly on a table, seen in multiple shots. After the skirmish, Hector pulls the chainsaw out of its box and Tony is leaning against the table with the items now all scattered in different positions. A few minutes later, Manny shoots his way in. You can see the table in multiple shots and the items are back in their original positions.
Plot hole: During the scene when Tony Montana is at the Babylon Club talking to Manny after he speaks with Mel Bernstein He says to Manny "Who else knew about that Rebenga Hit, Omar? He's fertilized." But what he failed to realize is that there was someone else who knew of the Rebenga Hit and he is the guy who was in the car with Omar during the first time they met while Tony and Manny were still dishwashers at the restaurant.
Audio problem: At Tony's interrogation at the Immigration Office, the voices of two of the INS Officers are shoddily dubbed over. This error is made even more noticeable by the fact that the first officer has been replaced by the distinct voice of actor Charles Durning. The other officer is voiced by Dennis Franz.
Continuity mistake: Angel is killed in the tub in the motel, but his body is not in there when shots of the tub are seen. Also, if the body were still in there, Tony and the other man would not be able to stand or move back and forth as easily as they did as they would be slipping and stepping on body parts.
Continuity mistake: When Tony is supposed to do the assassination for Sosa they are following the man and his family in a car. There are two beer cans and chinese food containers on the dashboard. When it shows Tony and the rest of the people in the car one of the cans is smashed. When it shows the view of the car in front of them it isn't smashed. The can changes from scene to scene.
Continuity mistake: When Tony is in the refugee camp and he stabs the communist at the doorway, the camera focuses on the Cuban's face where he is standing upright staring straight ahead. The camera then changes to a rear view and the Cuban is suddenly in a hunched over position making for an awkward transition.