BMW M5 finally getting all-wheel drive, can be switched off

After months of rumors and speculation, BMW finally announced what we’ve all been expecting: the next M5 will have all-wheel drive. This is sure to raise the ire of purists who still lament the move away from six-cylinder power, but it was always going to be difficult to send the expected 600 horsepower from a twin-turbocharged 4.4-liter V8 to the rear wheels.