Revealing mistake: When Draven sends T-bird to his death in his car, the real Ford Thunderbird is replaced by a fake mockup using a flimsy one-piece fiberglass body mounted on a pair of straight axles. When it explodes, the body lifts off in one piece, warping wildly while the front axle simply falls away. No proper car components like engine, transmission, suspension and so on, are seen anywhere, though they should be. (00:57:05)
Continuity mistake: During the car chase scene near the end of the movie when Connors jumps on to the black car the windshield is only slightly lowered. Later during the chase the gap is much bigger and when we see Callahan struggling in the back seat it's lowered all the way down. Also, Connors grip on the car keeps changing between closeups and far off shots.
Continuity mistake: In the opening rodeo sequence, Pepper's horse is brown in the chute, but black on the close-ups out in the arena. (00:01:25)
Continuity mistake: In the scene where the wagon train is waiting for Wagonmaster Harlow to decide which fork in the road to take, all the shadows are to the left. As they approach Harlow, the shadows are in front and moment later when the wagons move off the shadows are to the right. (00:26:20)