What size engine does the 2011 Audi R8 have?

* 4.2L V8: This engine produced 430 horsepower and 317 lb-ft of torque.

* 5.2L V10: This engine produced 525 horsepower and 391 lb-ft of torque.

There was also a 5.2L V10 Plus option, producing 550 horsepower and 391 lb-ft of torque.