Continuity mistake: When the tanker crashes at the end the driver is clearly wearing a crash helmet.
Visible crew/equipment: In the famous stunt scene where the motorcycle driver flips end over end, you can see the blue pad the stunt driver is supposed to land on. Only in the Widescreen version. Not visible in the full frame version.
Revealing mistake: The buggy that the landau crashes into is stationary when it should be moving, also the driver has been replaced by a dummy.
Continuity mistake: When Max reverses the interceptor at the end of the opening chase the front wheels are straight. When he runs back to the truck the front wheels are now turned to the right and the side of the car is a lot cleaner.
Continuity mistake: At the end of the opening chase the landau rolls and Max skids to a stop as he passes the truck. Look at the cab - it is facing down the road, but when Max gets out the cab is now facing across the road in front of the skid marks the car has just made, indicating that the interceptor should have gone through the truck.
Continuity mistake: In the final chase scene, Lord Humungus' clothing keeps changing (in fact it's clear that the actor playing him is switching). He switches between bear arms, to wearing a sort of fur vest, to a full length sleeve shirt under the vest.
Continuity mistake: The amount of dirt on the interceptor and engine blower changes throughout the opening chase scene from very dirty to clean on close up shots, and dirty again on the sides.
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.