Continuity mistake: The chase with Daisy in Rosco's squad car ends with a piano slamming into the car. When the truck hauling it comes to a stop, there's a reaction shot of Daisy at the wheel of the squad car. In the next shot, when the piano hits it, the car is empty. A second later, Rosco gets out of the truck and Daisy is back in the driver's seat. (00:30:00)
Revealing mistake: When the truck goes into the water, you can see the driver was either a stunt driver or a dummy. Also, you can see the top of the truck just under the surface of the water, suggesting it was on the bottom. A few seconds later, and all you can see are bubbles.Movie Nut
Continuity mistake: The boys already had dynamite arrows made up. When they go to stop Marlowe's car, Luke says "Twenty-five percent charge ought to do it." They weren't carrying any extra dynamite, and weren't carrying the bags that held the bows where they would have had the extra charges.
Factual error: While the boys are chasing Marlowe in town after he takes Price's gun, he fires at them. He fires eight shots out of a six shooter without reloading. Also, Luke puts an arrow into the car to stop Marlowe, and steam comes out. But the arrow is too far back to have hit the radiator, and it only went in about an inch, far too high to have even touched the radiator.
Continuity mistake: The road that the Dukes are travelling on was clear about two minutes before, and the thugs were right behind them. After turning around to go the right way, they find the area they just came through blocked by a semi. No way the truck could have been set there that fast.