Revealing: Near the end of the movie, when Johnny Depp's eyes are removed, he talks with the boy when he's against the wall. In several shots you can see Johnny Depp's eyes through the sunglasses

Continuity: In the beginning when El Mariachi is playing his guitar we can see him playing with a pick. But in one of the shots he is playing with his fingers.

Visible crew/equipment: At the bullfight a crew member is reflected in Sands' sunglasses in several shots.

Continuity: Towards the end when the alcoholic Mariachi is about to use his guitar case as a RC car, he opens it to get the control and shuts it. A cut to a different shot shows the box open again, but then when it rolls to the truck, it is closed.

Audio problem: At the beginning of the film when Antonio Banderas is playing the guitar on top of the building and there is a helicopter camera panning around him, he is playing something completely different to what the music does.

Continuity: In the scene where the little boy is guiding Agent Sands to the center of the city, watch Agent Sands' right hand. In one shot, his hand is empty and he is holding on to the wall as he walks, but in the shot where the boy turns around to look at the guy who is following them, you can see a gun in his hand. Shortly after that, his hand is empty again and he reaches in his pants and pulls out the gun.

Continuity: When Billy says "I present to you, senior Blascoe" to Barillo while he is playing the piano, you can see a guard in the background pointing his gun to the left. When it cuts the gun is pointing to the right.

Continuity: When Lorenzo practices shooting he hits a bottle which his alcoholic buddy is holding in his hand. Only the neck remains in the hand, but when the camera angle changes the piece is much bigger, including the label.

Continuity: Before Sands kills Bellini, when he says that he wouldn't think twice about ripping the patch from his eye hole and skull-f***ing him to death he is holding his cigarette up in the air. When the camera angle changes the arm is down on the table.

Continuity: The chain with which El and Carolina are linked together gets cut open with a welding torch. When the chain falls down on the ground it's intact again.

Continuity: After Depp kills Cheech he loads him into the trunk of the Studebaker. You see him driving with a beautiful sunset in the background but when he is searching the body and putting it in the water it is daylight again.

Continuity: In the beginning when Sands and Belini are talking and Belini says "That's when i first heard about him. He was a legend", we can see Sands glass with tequila is full. When it cuts the glass is empty with no time for him drinking it.

Revealing: When Sands shoots the waitress she dies without receiving a visible injury.

Revealing: When Sands throws a rock at Bellini after pushing him in the water, the rock hits his chest and abs. You can see the body is fake because as the rock hits, the arms along with the chest and head are lifted up off the water far too quickly, as if it was filled with air. Much like if you threw a rock into a life raft.

Factual error: When Antonio Banderas gets shot with the dart in the forehead there are two reasons why that wouldn't work - 1) There isn't any muscle tissue and the skin is too thin for the dart to stick most likely. 2) The tranquilizer would never take effect that quick unless it was injected into a muscle where the blood supply is greater.

Factual error: In the flashback scene when El Mariachi and Carolina are getting married, the chain is cut with a process called MIG (Metal Inert Gas) welding. This is a welding, NOT, a cutting process. While it can be done, the heat generated would have burned both wrists.

Continuity: As the bikes are chasing Banderas in the car, you can see the sky is overcast. In a following wide shot of the car and the bikes the sky it is a perfect blue sky with only a few small clouds in the background.

Factual error: When Sands throws Bellini's body into the water it floats like on the Dead Sea, as if it's made out of cardboard - barely submerged at all.

Continuity: Shortly before Sands kills the waitress she brings a pot of coffee which disappears at the end of the scene.

Continuity: When we see the guitar maker walking through the village playing the guitar which he is going to give El, he is first playing left-handed, then right-handed. From the loose ends of the strap one can tell that the shot is not flipped.