Unlike the recently unveiled 420-horsepower S6 and S7, the 2013 Audi S8 gets a more potent 520-hp V-8 engine, which is a 148-hp increase from the A8’s regular V-8 powertrain.
Like the other “S” trims, the S8 is distinguished by brushed aluminum inlays, Alcantara trim and different wheel designs.
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