Revealing mistake: When Crewe dumps the car in the river, you can see the wire attached to it that was used to pull it out of the water. Burt Reynolds mentions it on the DVD commentary.
The Longest Yard (1974)
1 revealing mistake - chronological order
Directed by: Robert Aldrich
Starring: Burt Reynolds, Eddie Albert, Ed Lauter, Michael Conrad
Continuity mistake: After Burt Reynolds hits the guard in the crotch with the football, a wide shot shows 2:29 left in the game. He hits him again on the next play, and the scoreboard shows 2:35 left. The clock in a football game, of course, counts down, not up.
Bogdanski: What the hell was that?
Paul Crewe: That was a dropkick.
Bogdanski: Dropkick?
Paul Crewe: Dropkick.
Bogdanski: How much is that worth?
Paul Crewe: Three points.
Bogdanski: Three points?
Paul Crewe: Three points.
Bogdanski: For that? Bullshit.
Trivia: When the film was released Burt Reynolds arranged to have this film shown in maximum security prisons all over the US, because the prisoners obviously couldn't get to the theaters to see it themselves.