Watch Audi’s performance sedan and supercar go head-to-head as the twin-turbo V8 RS7 takes on the naturally aspirated V10 R8 ...

The 2011 Audi R8 is Audi's halo car, a low-slung, two-seat supercar derived in part from the Lamborghini Gallardo. The R8's big V-8 and V-10 engines and quattro all-wheel drive offer blistering ...

Like every high-performance Audi, the S5 is equipped with Quattro AWD as standard ... as the RS5 posted an 0.98 g average result—0.01 g behind the R8 V10 Plus we tested previously.

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