“The next über-model from Audi’s Quattro GmbH division won’t officially debut in Geneva for another week, but images from its brochure have already made their way onto the web. The Audi RS5 coupe will no doubt take the performance of Audi’s B8 platform to levels beyond the much-loved and departed RS4. What we don’t know at this point is how high that level will go, and what the motive power will be.
It’s probably safe to assume it’ll fall somewhere between the 420 horsepower of the Audi RS4 and the 571 hp of the current Audi RS6. Since the V10 used the R8 and RS6 isn’t really in keeping with Audi’s current engine-downsizing philosophy (not to mention that the 10-cylinder probably wouldn’t fit into the smaller A5′s engine bay), perhaps we’ll a turbo or supercharged version of the 4.2-liter V8 in the current S5, or a maybe even a more severely amplified version of the 3.0-liter TFSI V6 from the S4.