The 2018 BMW M5 will cost $172 per horsepower

The new 2018 BMW M5 is a hell of a machine on paper. It’s up on power, traction, and it’s way quicker than the outgoing car. That’s mainly because there’s AWD (which you can, interestingly enough, switch into a pure RWD mode if you’re so inclined), which helps put all the power down.