Revealing mistake: At one point John is complaining about the Beach Boys playing on his car radio, he reaches to the center console and motions turning the radio off. In a few other shots though, we see that the car appears to have no radio at all, the center console seems to have a large tachometer and speedometer there, but that's all.
American Graffiti (1973)
1 revealing mistake
Directed by: George Lucas
Starring: Harrison Ford, Ron Howard, Richard Dreyfuss, Charles Martin Smith, Paul Le Mat
Factual error: In one scene, Milner does a U-turn and you see a postal box on the curb. The logo on the box is the current white eagle drawing, but that was not used until well after 1962.
Terry Fields: Pardon me, sir, but I lost my I.D. in... in a flood and I'd like to get some Old Harper, hard stuff. Would you mind buying a bottle for me?
Bum at Liquor Store: Why certainly! I lost my wife, too - her name wasn't Idy, though, and it wasn't in a flood - but I know what ya.
Terry Fields: Thanks, here's enough for a pint.
More trivia for American Graffiti