Despite this Audi RS6 packing a lot of extra muscle on top of its already impressive stock power figure, it still looks like it's about to get a real whooping from this 1,200 HP CLS 63. On paper, you could say this race is beyond unfair. Besides, it's not as if the RS6 has some type of weight advantage to make up for how many horses it's missing compared to its opponent. Thanks to its GAD Motors tune, the CLS 63 in question is putting down a monstrous 1,200 HP, whereas the RS6 is good for 750 HP, spurred on by Gosha Turbo Tech's GTT750 kit. Expecting this race to end in a victory for the RS6 is completely unrealistic, which is why we didn't bother keeping the result a secret from you. Yet, one would also expect the Mercedes to run circles around the Audi, after all, we're talking about a 450 HP difference on two cars that weigh about the same. Sure, if this drag race would have gone on longer, the CLS would have had time (and room) to put several seconds between itself and the RS6. Yet, they both ran a 10-second 1/4 mile.