Continuity mistake: There's a scene where Al ducks into a bar from a very wet and rainy night outside, and he's soaking wet. However a couple of shots later his hair appears perfectly blowdried.
Continuity mistake: In a scene at a coffee shop, the same few period vehicles keep passing by on the street in the background.
Continuity mistake: In the scene where Carlito is being chased by mobsters; as they are about to close in on him in the subway car , several New York City Police Recruits board the same subway car. The uniforms they are wearing weren't worn by police recruits until the late 1980's, and the movie takes place in the early 1970's.