In developing a successor to the original X6 M, BMW clearly was focused on the numbers, which are downright amazing. For starters there’s that 60-mph sprint, which takes just 3.7 seconds. Or put the X6 M on a drag strip where it will run the quarter-mile in 12.1 seconds at 115 mph. Both outpace the Mercedes-AMG GLE63 S coupe, the X6 M’s new archrival. It takes the X6 M a tick or two for its twin turbochargers to start force-feeding all 4.4 liters of V-8, but once they do, the 567 peak horsepower pushes you back in the seat like an NFL running back’s stiff-arm. The new eight-speed automatic clicks through the gears until the X6 M reaches a governed top speed of 160 mph.