Hi, thanks for the email. Any claims are purely from the owner, but with a genuine 308bhp it WOULD easily need 350bhp+ for an Evo weight 4wd car to accelerate away due to the huge transmission losses etc of 4wd, even more so with something as heavy as an RS4.We have tested this ourselves countless times at Bruntingthorpe etc, so we would never question that.4wd cars always have impressive 0-60 and 0-100 times, but when you test rolling start figures they are far less impressive. The power figure, well, thats claimed by the owner, we wouldnt want to speculate, but as rolling roads all read so differently, and thats not a million miles off whats generally done with a K03, well...