Trivia

The title song, "Car Wash", was a #1 chart-topping hit for Rose Royce and was one of the biggest-selling singles of the 1970s disco music era.

George Carlin wrote his own dialogue.

Richard Pryor, plays Daddy Rich, head evangelist of the Church of Divine Economic Spirituality. Though Pryor has been frequently top-billed in promotional materials and advertisements for this movie, his appearance in the ensemble of performances is practically a cameo appearance. [Per IMDb Guidelines, if an actor is credited, the role is NOT a cameo.] Pryor has said years later in his autobiography, "Pryor Convictions and Other Life Sentences", that he felt that the public was misled into believing that he had had a bigger part in this movie. Pryor also admitted being high on cocaine during the two days which he filmed his scenes and that he didn't really understand the part of Daddy Rich's involvement in the film by saying: "On the set of 'Car Wash', I was too coked out to know any better."

Final film (as an actor) of Ivan Dixon.

The film takes place during a ten-hour period over the course of a day.