Mad Max (not The Road Warrior) but the actual Australian un-dubbed version is currently playing on my TV. At first I was wondering why they dubbed his voice at all because the accent really isn’t that bad. But as the film progresses Mel’s voice gets quieter and he is a bit of a mumbly mouth too.
So I guess that might be the real reason they dubbed the voices and not really because of the Aussie accent. Then I find myself asking why is this film such a classic? It really isn’t very good. In fact you could cut the first hour and not miss a thing.