They went a different road from the original(s).
In the original it was more dark and grimy, it felt more dramatic, and the atmosphere in general was sad... very sad.
In the remake, you have drum trucks and flamethrower electric guitars, it's a much more humor-ish comic take, which makes this, again, not a sequel, but a cash-in remake.
It's not a Mad Max movie. The main character isn't Max, the atmosphere isn't Mad Max's, it just happened to have spiked cars chasing plated cars in the wastland.
But hey, how many movies with spiked cars and crazy wasteland chase scenes do we get every year? Am still down for it.