Time Out says
Superficially just another black exploitation film (one of the first to feature a woman in a strong central role), Coffy is distinguished by its unremitting moral blackness. With a yellow press feel to the script and a welcome sexual frankness, the world Coffy inhabits is revealed as one where social, sexual and political exploitation are simply the norms. What makes the film is essentially the character of Coffy as played by Pam Grier with increasing alienation: a nurse out to get the men who are responsible for her little sister's addiction, she makes a conscious decision to manipulate the sexual situations which the men around her force her to engage in. It is a performance that defies and subverts the genre.