Watch: Is the RS6 Worth the Premium Over the S6? Share Comments We all know at this point that the RS6 is a mighty beast of a car. But the S6 is no slouch. So how much more are you getting for your money? Quite a bit, actually. In this “dragparison,” a term that I refuse to ever use again, from Australia’s CarExpert, the RS6 Avant goes up against the S6 sedan in a quarter-mile drag race and in a braking test and the difference is pretty stunning. The S6 hits 62 mph in an impressive 4.6 seconds. The RS6 muscles it out in just 3.6 seconds. In the standing quarter-mile, meanwhile, the RS6 is again a full second faster than the S6, reaching the finish line in just 11.7 seconds. Finally, in the braking test, although both cars come to a halt in the same amount of time, the RS6 Avant is a few feet behind the S6 despite its extra bodywork. All in all, it’s an impressive result for the wagon. Truly it’s a monster of a car.