Continuity mistake: During the shootout with Danny Trejo's men, one of his motorcycle thugs hits a car and is sent flying through the air. If you watch, you can see the approaching car is white, but when the thug runs into the side, it is a green car. (00:53:20)
Continuity mistake: When the mariachi is shot by Marquez we see holes in his shirt made by the bullets as he flies backwards in the air. There's a quick shot back at Marquez still shooting, then back to the mariachi still flying through the air, but this time the holes made by the bullets in his shirt are covered in blood. That much blood wouldn't appear that fast. (00:56:45)
Continuity mistake: When Carolina is being shot by Marquez she is holding her daughter who actually looks quite serious. When it cuts she is suddenly smiling. (00:56:40)
Continuity mistake: In the escape scene Carolina puts her leg over the windowsill. When the camera angle changes the foot is back up. (00:21:15)
Continuity mistake: In the scene where Bellini tells Sands El's story the food on Sands' plate disappears when he says that he couldn't find a briefcase small enough for $10,000. (00:05:15)
Continuity mistake: In the scenes after Johnny Depp's eyes are removed the length of the blood draining down his face changes from shot to shot. Generally they get longer (as you would expect) but occasionally revert to shorter blood trails. Particularly noticeable when going from under his chin to not reaching his chin. (01:22:05)
Revealing mistake: In the scene where Johnny Depp is searching Cheech Marin by the river, you can see Cheech breathing, even though he is supposedly dead from the gunshot in the scene before.
Suggested correction: There is a feature on the DVD that shows the making of this scene, and that a dummy was used.
Incorrect. What they did was use digital effects to blend the fake eye socket of the dummy onto a shot of the real Cheech Marin because the dummy didn't look real enough in close-up. So, that actually is Cheech Marin, and you can, in fact, see him lightly breathing once or twice. The only part of the dummy you can see in these shots is the area immediately around his right eye, where they blended footage of the dummy in. They specifically said on the DVD that the dummy didn't look real enough to be used on its own. I'm not sure how you could have missed that part on the special feature because they show how they blended the two shots.
Revealing mistake: When Antonio Banderas jumps into the Cadillac to escape from the bikers, there is a wide shot of him driving the car while being chased for a few seconds where you can very obviously tell he is not driving the car. It is a stunt double, and a very skinny one at that. In fact it almost looks like a woman. (00:55:50)
Continuity mistake: When Barillo has his face operated on, we get a shot of him where we can see the skin around his eyes is extremely affected by the operation. Then later when we see him looking at his dead daughter, we can see the skin around his eyes is almost fully healed. This is just a few hours after his operation, which would be impossible. (01:05:00 - 01:28:10)
Continuity mistake: When Belini is telling Sands about Carolina, as he says "The most drop dead gorgeous woman you'll ever see", we go back to the bar where you can see the bartender push the counter back on the floor. At that time you can see all the bottles on the left side of the counter. Two shots later all the bottles has moved to the right side of the counter. (00:03:40)
Revealing mistake: You can see Jorge's hair move, as a hair dryer blows in his hair, right before Ajedrez rams her gun in his head. (01:05:05)
Continuity mistake: When the army shoots the guards around the president, before El shows up and saves him, you can see bullets blowing off pieces of the wall behind. A second later, they disappear. The damage was CGI, and wasn't animated in all the shots.
Revealing mistake: Watch carefully when El Mariachi says "Then I guess I have no choice but to kill you all" to Cucuy, and he fires a shot. You can see a black outline on the shirt of the guy's shirt who's hit right before sparks shoot out of the place of impact. This happens on other occasions too. (00:51:40)
Revealing mistake: After Carolina is shot dead her corpse breathes a little. (00:57:00)
Continuity mistake: When Sands buys chewing gum for the boy, we read the mark 'Canel's' on the box. One shot later, the shot is reversed and we can see 's'lenaC'. The box reverts to normal on the next shot. (00:28:35)
Continuity mistake: When Jorge is captured there is a shot where he is sitting with his head tipped over to the side, while one of the bad guys suggests to torture him. In the next shot Jorge's head is straight. (01:14:50)
Revealing mistake: When the mariachi wakes up after being tranquilized by the dart, he beats a couple of guys. Then he turns around shooting a guy in his head. If you look closely you can see blood being splattered on his head from the lower right corner. (00:57:40)
Continuity mistake: Carolina climbs on the bus with high heels, but when she and El run across the roof she wears flat shoes. As she jumps you can see she has nothing on her feet. There was not enough time for her to take them off. (00:22:25)
Continuity mistake: Near the end, when blinded agent Sands is shot by one of the two bad guys in the leg, he falls towards and drops both his glasses and the gun he's holding. Then the view changes to the bad guy and in the next shot on Depp, he is holding that gun in his hand again, miraculously. (01:26:05)
Continuity mistake: When Billy and Jorge are talking in the church and Jorge says "Can you get him close to Barillo" about Billy's dog, you see Billy holding on to his dog with both hands. When it cuts you see his arm suddenly back resting on the back of the bench. (00:50:00)
