Factual error: After the scene where Snowman is trying to leave a written note for the beer warehouse staff (and then throws his notepad away), Bandit's CB radio is shown receiving a signal and Bandit changing the channel, however, the radio is not powered on as the signal meter needle does not swing out, nor are the signal meter light, channel indicator light or receiving LED (yellow on this radio model) illuminated.
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.
Revealing mistake: When Frog says "We're going 110" she's misreading the speedometer. It shows that they're going 110 kilometers/hr, which is 70 miles/hr. Also, the ignition is turned off and the oil pressure and temperature gauges read far lower than they would if the car was actually going 70mph. There's also far too much dust on the dash and gauges for a brand new car that hasn't been on any dirt roads yet.
Continuity mistake: When Sally Field is driving the T/A, right after the Buford's car goes under the rig you can see that her door is locked. Right after the Bandit says, "I'm still trying to get rid of that Texas County Mounty," and the camera is on her, you can see the door lock is open.
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.
Continuity mistake: At the roadblock set up in front of the General Store (where Bandit asks Frog if she's ready), all three police cars are Plymouths. When one backs into another, a close-up insert shot shows the ramming car is a Pontiac and the rammed car is a 1960s-era Ford sedan. The next shot has two Plymouths falling into the roadside ditch. The accident itself is also impossible because just before the impact, you see the first car stop before it gets behind the car that will ram it in the next shot, avoiding the accident all together.
Continuity mistake: When The Bandit is getting ready to get in the convoy of trucks, right before he gets in between the trucks, all the trucks are close together. When they show a closeup inside the car, you can see the trucks are farther apart when you look out he back window. In the next shot when the cop car is pulling up, the trucks are close to each other once again.
Continuity mistake: When the Bandit first pulls over and picks up Sally Field, then he screeches off, if you look at the road you can see all the skid marks from all of the other takes of this scene, even down to the bit where the van pulls out of the junction and the bandit does his thing and then suddenly speeds off.