One of the models that BMW will reveal at the 2012 edition if the Geneva Motor Show next week is the M550d xDrive, the 5-Series based model of the M Performance Automobiles sub-brand that also make its premiere at the same event.
As is common practice these days, the “550” badge doesn't reveal the engine’s capacity as it used to. The M550d is powered by BMW’s new 3.0-liter inline-six diesel that features no less than three turbochargers, including two smaller and a larger unit.
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