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Here’s some new video footage of BMW’s M-badged X6 SAV on the race track. Like its X5M twin, the X6M comes with a new 4.4-liter twin – turbo V8 engine delivering a maximum output of 555 horsepower and a peak torque of 680Nm or 501-lbs/ft. Power is distributed to all four wheels through a six-speed [...]

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