Watch as Fifth Gear’s Vicki Butler-Henderson tests both the Audi S5 and the BMW 335i. The BMW 335i is powered by a 3.0 liter, inline-6, twin-turbo engine that produces 300 horsepower. The Audi S5, on the other hand, is powered by a 4.2 liter V8 engine that produces 354 horsepower.

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