After that comes the Audi RS3, using the same 340-hp, five-cylinder turbo from the TT RS. Sub five-second runs to 62 mph are in the offing, and its 250 kph (155 mph) top speed can be raised to 280 kph (174 mph) for a nominal fee. Then, at the Frankfurt Auto Show in the fall, the RS7 Sportback takes a bow. Powering the four-door fastback will be the 4.0-liter, 550-hp twin-turbo V8 that'll be shared with the 2011 Bentley Continental GT. That would put it about 100 horses clear of the rumored output in the S7 we should see next week in Paris, and the V8 is said to be 20 percent more fuel efficient than the 5.0-liter V10 in the RS6.
[Source: Auto Bild via German Car Blog]