Continuity mistake: When Pacino is talking to his old drug dealer friend at a table outside a cafe he has a bottle of beer in his hand. The bottle hops all over the place in the scene. One minute it's in his hand, then on the table, then he's taking a sip from it....without Al Pacino moving.
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.