What it is: The sportiest version of the Audi A8. While the previous S8 had a Lamborghini-based 5.2-liter V-10, the new S8 has a twin-turbo V-8.
Why it matters: Audi’s last S8 didn’t exactly wow us, and this one has a bunch of new competitors. But, based on our experience with the new A8, things look promising for the top Audi sedan.
Platform: The latest A8’s aluminum space frame and body.
Powertrain: A 520-hp, 4.0-liter turbocharged V-8.
Competition: Aston Martin Rapide, Maserati Quattroporte, Mercedes-Benz S63 AMG, Porsche Panamera.
What might go wrong: Very little. This will be the most fun-to-drive A8 by far, and big sales volumes are not what Audi is going for.
Estimated arrival and price: We expect it to hit dealerships in 2012, at a cost of more than $100,000.
Read More: http://www.caranddriver.com/features/11q1/2012_audi_s8-feature