Continuity mistake: When they are all in the trailer chasing Butch's car, the trailer shakes and smashes about, but when you see the view inside the trailer the passengers are not even moving or anything in the trailer moves.
Continuity mistake: When Butch and Phillip reach the end of the tarred road they stop directly in front of a signpost. Towards the end of the scene there are some shots where the distance to the post is at least five meters, and also from the position of the steering wheel one can tell that the car has been moved in between. (01:01:50)
Continuity mistake: When Phillip crawls under the fence the barbed wire tears the lower part of his costume, whereas in the next shot the tear starts at the shoulder. When Butch sends him back to his mom, the costume is totally torn up in the back for no specific reason. (01:45:05 - 01:59:10)