Revealing mistake: In the scene where Axel throws the art dealer's henchman onto the buffet table, if you watch carefully (or use slow-mo) you can see the stunt double pulling off that manoeuvre. There is also a stunt double being thrown over the table.
Revealing mistake: In the scene with the motorcycle riding on its rear tire, skid marks can be seen from previous takes.
Revealing mistake: When a man is shot in the head, the bullet hits his hat, and it's very obvious there's no real bullet wound, his hat just opens and reveals a red hat he's wearing.
Revealing mistake: Almost every time a floating robot explosive that is chasing the police cars is seen, you can see a wire that is pulling them.
Revealing mistake: Near the end, Clint Eastwood picks up a lamp in anger and throws it across the room, but there's no power cord attached to the lamp.
Revealing mistake: When Jake is driving his car to run down Vince, there is a quick shot just before he hits him that is obviously a dummy placed in front of the car.
Revealing mistake: The ammo box that is removed from the purse is for blank studio type cartridges, and not ballistic ammunition.