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BMW held a dealer presentation in the Netherlands and a leak has rumors stirring that the upcoming M550d will officially come with 381-hp and 516 lb-ft of torque from its tri-turbo, inline-six diesel powerplant.
Even though the horsepower figure comes in lower than the early speculations of over 500-hp, the torque is pretty impressive. It also appears that the M550d will be AWD only with production beginning next March. It is not yet known if this F10-generation M550d will make its way to North America, but we could be seeing the tri-turbo diesel in other BMW models including the X5 and X6.