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14th
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Ingolstadt's answer to the M5.
Audi's supercharged 3.0-liter V-6 in the A7 Sportback is such a lusty, powerfully good engine that it makes opting for the S7 and its 4.0-liter turbo V-8 seem superfluous. The 4.0-liter turbo S7 simply doesn't feel that much quicker or more powerful than the A7's V-6. In fact, Audi says the S7 was not designed to compete with the BMW M5, the Mercedes-Benz E63 AMG, or the Cadillac CTS-V, anyway.
Photo Gallery: First Look: 2014 Audi RS7 Sportback - Automobile MAgazine
Photo Gallery: First Look: 2014 Audi RS7 Sportback - Automobile MAgazine