Is BMW teasing an X6 M diesel?
What could it be? Odds are this is the diesel X6 M we've already seen frolicking around the Nürburgring. If the vehicle in this clip and that oil-burning monster are one and the same, we can expect to find a tri-turbo diesel engine under the hood, though no solid power figures have leaked yet. We're guessing the final numbers will land somewhere between earth-shattering and cosmically outrageous. Hit the jump to check out the video for yourself.
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