What is the horsepower and torque of the Mercedes-Maybach S-Class engine?

The Mercedes-Maybach S-Class is available with two engine options: a 4.0-liter V8 engine that produces 496 horsepower and 516 lb-ft of torque, and a 6.0-liter V12 engine that produces 621 horsepower and 738 lb-ft of torque.