Continuity mistake: When Axel is at Victor's gate, looking at his house, the two other cops show up and Axel turns to face them. When you see the shot from in front of them, they're standing shoulder to shoulder. But the shots from behind show them standing a few feet apart.
Was the highest-grossing R-rated film of all time for nearly twenty years until "The Matrix Reloaded" upseated it on June 3, 2003. In the history of R-rated films, it held the longest record for high grosser (19 years).