What is BMW M9's engine type and power output?

I am interested in buying a BMW M9 and I have heard conflicting information about its engine type and power output. Can someone clarify this for me?

The BMW M9 comes with three engine options: a twin-turbocharged inline-six, a V8, and a hybrid powertrain. The power output ranges from 473 horsepower to 616 horsepower depending on the engine choice.

I personally own a BMW M9 and I can say that the inline-six engine provides a perfect balance between performance and fuel efficiency. Don't be fooled by the smaller engine size, it still packs a punch on the road.

From my experience working as a mechanic for BMW, I can assure you that the M9's power output and engine type are accurately advertised. You won't be disappointed with the performance of this car.