09/21/09 First Look: 2010 BMW X6 M The arrival of the controversial X6 M might be confirmation that BMW has dumped every engineering principle that made its M cars so distinctive and consistently good for the last thirty years. Until now, all M cars have had a high-revving, normally aspirated engine, a manual or automated manual gearbox, rear-wheel-drive, and a sedan or sports car shell. You won't find a single one of these qualities in M's latest efforts.