BMW's M4 Competition, with its three-liter twin-turbo inline-six, already has a lot of power, clocking in at 503 horsepower. For 2025, BMW decided to add more power to the xDrive all-wheel-drive trim for 2025, bumping it up 20 to 523 horsepower. For comparison, non-Competition trims of the Rear-wheel-drive M4 use the same three-liter twin-turbo inline-six producing "just" 473 horsepower and 406 pound-feet of torque while the more powerful rear-wheel-drive Competition makes 503 horsepower and 479