Is the Audi RS 4 powerful enough for highway driving?

It features a 2.9L V6 Twin-Turbo Plug-in Hybrid system, delivering a massive 639 PS. For buyers considering the Audi RS 4, that matters because it affects how easy the car is to live with, whether for commuting, family use, long-distance driving or ownership costs. The useful way to read this is not as an isolated specification, but as a clue to how the car will feel in real daily use.