Audi will not be producing a new RS4. Instead of making a new RS4, the company has decided to go ahead and make a few changes to the RS6 . The new RS6 is likely to be equipped with a powerful twin-turbo V8 engine that pumps out 600 PS (441 kW / 592 bhp) similar to the RS7.
MTM distributor Horchaus has confirmed confirms that it has not received the necessary clearances required to import Audi RS models into North America. The company says that they were not able to work through all the regulatory commissions to have the cars meet all North American regulations. They cited the lack of appropriate collaborators as one of the reasons why this could not happen.