The standard features of the BMW M550 i xDrive include 4.4L V-8 523hp twin turbo engine, 8-speed automatic transmission with overdrive, 4-wheel anti-lock brakes (ABS), integrated navigation system, side seat mounted airbags, curtain 1st and 2nd row overhead airbags, airbag occupancy sensor, automatic air conditioning, 19" aluminum wheels, cruise control, ABS and driveline traction control.