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.
Road Pirates - S2-E5
Factual error: When Roscoe tries the same jump the Dukes did, his car goes nose first into the wall of the ravine. Upon a close up, Roscoe is fine, but not wearing a seatbelt. According to physics, he should go through the windshield or get cut up.
Factual error: Throughout this entire season, Bo and Luke left Hazzard to become Nascar drivers. This wouldn't be allowed as part of their probation legally prevents them from leaving Hazzard County.
Suggested correction: First off, in s01e01, the show starts where it had already been a year since Bo and Luke were put on probation. However, they were only given 5 years probation and this takes place in season 5. However, in the show they were allowed to leave Hazzard County with permission from a parole officer, so even assuming they're still on probation, they could have had permission without showing it on screen.