2012 Audi RS7 may reach for the 600 horsepower mark to outdo the next BMW F10 M5.

Could Audi really go all the way with the RS7 and leave behind the competition in the horsepower wars?

According to American car magazine Road & Track, rumor has it that Audi may be working on a 600 bhp (608 PS / 447 kW) RS7 performance variant of the A7. Under the bonnet would come a twin-turbo 4.0 liter V8 engineered to deliver that level of output.

That power quotient would surpass the expected output of the next BMW M5 (F10) which will come with a 4.4 liter-twin-turbo V8 producing 570 hp (425 kW / 578 PS).

To handle all that power, the RS7 will feature Audi's all-wheel drive Quattro system with a torque vectoring differential. The RS7 will also come with an adaptive suspension, larger front air intakes and 19 and 20-inch wheels.

The 2012 Audi RS7 is expected to debut late next year.

Gallery: Rumor mill: 600 HP for the Audi RS7?