See also:

BMW X6 M
The X6 M steps up from the 400-hp, 4.4-liter V-8 to a twin-turbocharged version making 555 hp. Torque is rated at 500 pounds-feet. BMW says the zero to 60 mph time is 4.5 seconds. A six-speed auto ...

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X5 M in the Market
Purists might grumble about the revered M badge spreading to BMW's crossovers, but as other manufacturers have shown, there's money to be made in high-performance SUVs; you need only look at Merce ...