For some reason the filmmakers thought it would be fitting for Max to have a dog. They "interviewed" over a hundred dogs, and were not satisfied by any of them, so they scrapped the idea. Just by chance, the director was at a friend's farm and met the dog who's in the movie, the dog was so intelligent and willing to follow commands he just had to have him. Unfortunately, on the first day of shooting the dog started behaving very strangely and wouldn't listen to commands. They almost scrapped the dog idea again, until one of the crewmen found out that the sound of roaring engines was what was bothering the dog. They plugged his ears with cotton, which you can see if you look close in some shots, and the dog began behaving again.

Because he was relatively unknown in the United States, Mel Gibson wasn't featured in the film's trailers.

When Max opens the Semi's door, a dead body falls out. This body is actually the same "eye popping" dummy that was used at the end of Mad Max 1.

You might have to look close, but the Gyro Captain's copter is completely covered with pornographic pictures. It took many viewings for me to notice this. Apparently he's very sexually motivated, as later in the movie he complains that the only thing he really misses from the old world is lingerie, and the only reason he joins the escapees in the end is because he wants to be with the cute blond girl.

In the 1990s, the title was taken by WWF tag team the Legion of Doom as another name for their team; the pair also modeled their trademark spiked shoulderpads after the film.

The logo on the tank truck is "7 Sisters Oil", reference to a conspiracy theory, popular before OPEC-conspiracy theories took over, that Standard Oil and six other companies controlled the world oil market and bought up and suppressed 200-MPG carburetor and so on to keep oil prices up. Source http://en.wikipedia.org/wiki/Seven_Sisters_(oil_companies)

It was renamed "The Road Warrior" for North American distribution because "Mad Max" had been released on a limited basis, and calling it "Mad Max 2" would have confused moviegoers

When The Humungous opens his gun case, you can see a skull and crossbones insignia that looks just like a Nazi "Totenkopf" badge that SS soldiers wore on their cap. There's also a photo in the case that appears to be a family picture, with the father in a Nazi outfit (perhaps Humungous' father, or even he himself).

One of the more spectacular stunts in the film was a terrible accident. When one of the raiders is on a motorcycle, he hits a car, flies off the bike, hits his legs on the car and starts cartwheeling through the air. This was a real accident, the intended stunt was to just have the stunt man fly over the top the car without hitting it. Instead the stuntman hit his legs on it, but it just looked so spectacular that they kept it in the movie. The stuntman broke his leg badly, but survived.