Revealing mistake: When Frog makes her "We're going 110." comment, they then show a close-up of the dash-board. Even though the speedometer does show them to be going 110 (albeit km/hr, not miles), the ignition key is in the 'off' position, and the 'amp' gauge shows '0'. This is a clear indication that the engine was not actually running during this shot. (00:21:00)
Continuity mistake: When sheriff Justice stops the kids in the van, his gun belt keeps appearing and disappearing. (00:22:25)
Continuity mistake: In the scenes where Sally Fields is removing her wedding dress and veil and throws them out of the car you watch the veil leave the car and fly away, in the very next scene the veil is back inside the car as she struggles to get it to fly out of the car again, as it is caught on the t-top.
Continuity mistake: Every time they show how fast the car is driving, there's fewer miles on the odometer...
Continuity mistake: While at the truck stop to refuel, the Bandit talks to Justice on the CB. During this scene, Justice is having his car worked on the front is up on a jack. When the bandit drives by them to leave, you can see Junior is wide awake (in fact, his head turns to look at the car) and then immediately in the next shot he is sleeping.
Revealing mistake: In the chase scene with the cop taking a "10-100," the patrol car loses control and goes backwards into a lake. But if you look closely as it plunges in, you can see the backup lights lit, which is impossible if the car was in drive.
Continuity mistake: When Snowman plows into Sheriff Justice, he causes Buford's car to spin clockwise. In the very next shot, Buford is spinning counter-clockwise. If this were to happen in real time, Buford would have rolled over. (00:32:45)
Continuity mistake: In one shot near the beginning the bandit is being chased by the first of many cops, he comes to an intersection and turns left. But if you look close you can see that he actually turns the steering wheel to the right .
Continuity mistake: When Sheriff Justice tries to drive off while on top of the jack (at the gas station), his car falls off the jack, as he hits the red car in front of him, in the car's rear quarter, spinning it around. In the next shot of Buford, the red car is back to its original position, with Buford's car on top of the red car's roof. (00:56:10)