Continuity mistake: This film's set in the 50s, but the actors use 20 Austrian Schilling bank notes, which were only issued in the mid 1970s.
Continuity mistake: In the scene where Thunderbolt and Lightfoot are in the car with the crazy driver. The car goes over the embankment and as it flips you can see a wheel break off. A short time later they both drive off in the same car, with the wheel attached again.
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.
Factual error: In the Bosphorus scenes, as the ferry crosses from the Asian to the European side of Istanbul, in the distance large trucks can be seen speeding along the coastal road opposite. Well before their time.
Revealing mistake: When Mr. Green pulls out of 28th Street, we see him disengage the "Dead Man's Feature" (by pressing down on the throttle with his hand). However, he does not actually move the control lever to make the train move. In that position, the train is at "idle" and will not accelerate.
Continuity mistake: After Mr. Palmer walks over and tries to pick up Claude Mulvihill's gun (which Jack kicks away) we see Jack's hat on his left. In the next shot as Jake picks it up it's now on his right. (01:19:40)
Continuity mistake: When Hadrian jumps the mustang over the upturned car, the film slows down to show the jump in slow motion. When the car lands, it hits so hard the car spins around and ends up facing the cars it jumped. The scene is then repeated at normal speed, but just as the car would be shown spinning out, a shot of the car driving away from the accident is shown.
Visible crew/equipment: When Stuart Margolin closes the car's door at the airport after putting the going-away present in Charles Bronson's suitcase, the camera's shadow is seen in the door.
Continuity mistake: There are a number of scenes (stable house, car, hotel) showing Claudia wearing a green harness dress. It is quite obvious that she is not wearing a brassiere in all of those scenes. In the hotel room, where Foxy and Claudia meet the judges, Claudia removes the green dress and is now wearing a bra. It would be highly unlikely that she would be putting one on, at the same time she is getting undressed. This was obviously done to cut down on nudity in the film. (00:41:30 - 00:47:45)
Visible crew/equipment: In the scene where Herb Edelman is explaining to Richard Jordan exactly whom Robert Mitchum is going to see, a microphone can be seen at the bottom of the screen, just under the low coffee table.
Audio problem: As McQ is attempting to escape from the hoods by driving down the beach in a 4-door automatic Belvedere, you can hear manual transmission upshifts occurring.
Continuity mistake: When Buster and Billie are at Slim Mim's Jamboree near the end of the film, Buster is wearing an open-collar shirt. When they step outside to get some air, it changes to a button-down shirt and tie.
Continuity mistake: Gene Hackman returns a second cookie to Harrison Ford's dish that he hadn't taken - or perhaps it's the same cookie he picked up and returned a moment earlier. Either way, the cookie had suddenly appeared in Hackman's hands going from one shot to another. (00:30:35)