The regular XM already comes with 644hp and 800Nm of torque, making it more powerful than a Lamborghini Huracan STO and a Porsche 911 Turbo S.
BMW has tuned the twin-turbocharged 4.4-liter V8 in the Label Red variant to produce over 100hp more than the standard XM, so it produces 578hp and 750Nm of torque.