Here's the thing about the Audi A8 lineup: When you reach above the standard and long-wheelbase 4.2-liter car, you have choices. You can go up to the glorious $133,500 A8L W12, or you can choose a more enthusiast-minded route – the S8. You see, while the A8L W12 may produce 500 horsepower and 469 pound-feet of torque from its 6.3-liter 12-cylinder engine, the S8 uses a pair of turbos mated to the company's new 4.0-liter V8 to pump out an impressive 520 hp and 479 lb-ft.
Autoblog, 2012 Audi S8 suggests eight is more than twelve (video)