Revealing mistake: When the gyro thing is in the air and that bloke grabs the snake you can clearly see that it is a rubber snake.
Revealing mistake: When they leave the compound at the end, the gyro captain drops some petrol bombs on the ground as he flies over the bad guys. The ground is already wet with petrol where the bombs land.
Revealing mistake: The buggy that the landau crashes into is stationary when it should be moving, also the driver has been replaced by a dummy.
Revealing mistake: When Max has the head on at the end you see a shot from in front of the truck to show the impact. Look at the cars and bikes behind that should be moving as they are chasing the truck - the motorbike riders and cars are stationary; the motorbike riders even have their feet on the ground.
Revealing mistake: In the opening scene, when Mad Max searches the Mack truck, he finds a clearly fake body in it.