Continuity mistake: Right before Stroker gets into his car to start the race at the beginning of the movie the grandstands behind him are empty, in the next shot as they are coming around to get the green flag they are full.
Other mistake: During the scene in which Jackie and his girlfriend are being chased on bikes they hide in a shop. When the men chasing them stop outside of the shop, the subtitles read 'This is a dead end, we'll spilt up'. Spilt up?
Continuity mistake: Tomas Milian jump balconies at night. Then he sees the murder and escapes from the hotel room. Next he drives the car and all of a sudden it's day. (00:32:20 - 00:35:05)
Other mistake: Mrs. Rutter has on full makeup when she wakes up in bed the morning of Dorfus' kidnapping.
Revealing mistake: When Doctor Detroit and his girls make their escape from the automobile salvage yard, they drive a wrecker straight through a large sliding wooden gate, which punches a perfectly clean outline of the truck and Doctor Detroit through the gate. Problem is, the resulting (pre-cut) hole does not match the dimensions of the wrecker or Doctor Detroit at all. In fact, at the point of impact, the stuntman playing Doctor Detroit hugs in close to the wrecker for protection as it plows through the gate, and the outline of his body just magically opens up two feet away from him.
Continuity mistake: When John is holding the groceries in the hallway and drops them, the items and bag fall to his right. In the next shot, the items and bag are all the way to his left.