Brute power and a traditionally unassuming design make the S8 plus a veritable wolf in sheep’s clothing. The “plus” means the twin-turbo v-8 now makes 605 hp—85 hp more than before—while a rear-biased all-wheel-drive system makes sure all that power is ap

This relatively unassuming big German luxury sedan really is a member of the exclusive 600-hp club. The Audi S8 Plus competes in the upper echelon of the luxury-sports-sedan realm, trading blows with such machines as the 577-hp Mercedes-AMG S63 and the 600-hp BMW Alpina B7. The previous, 520-hp S8 wasn’t quite keeping up in the horsepower wars, though, so Audi introduced the top-dog Plus model for 2016 with more power—and it’s now the only S8 configuration available to U.S. buyers. (We’re not complaining.) Beyond its burlier engine, the S8 also differentiates itself with a shorter, 117.8-inch wheelbase; as with the BMW 7-series and the Mercedes S-class, the regular A8 is long-wheelbase only in America—the A8L in Audi-speak. The Audi also has an uprated chassis, including a stiffer suspension and bigger brakes, as well as a subtle visual makeover with unique styling treatments front and rear and snazzier interior trim.

Springdale, Arkansas

4.0

It is very nice, interesting, fast and effective.

I have drove this car and it was very smooth. The engines are good.

Fitzgerald, Georgia

4.0

The Audi S8 is looking very nice and very smooth for driving.

The car is clinical. Technical and takes time to warm to it. Few sedans are more powerful than the 2018 Audi S8.

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AUDI S8 BY YEAR

Used 2013 Audi S8

Used 2014 Audi S8