It's even worse for Audi as their RS6 is only 0.2s faster and they have no model to compete with in the first place. The new S6 is a diesel with only 344 PS while even the M550d has a lot more power. Even the M340i can keep up on the first meters with an Audi RS4. Goes to show that Audi was only a competitor because they had AWD and two turbos. Now that both BMW and Benz use that concept, they can't keep up anymore.