I watched this on tv the other night on fith gear..
4,2 sec 0-60 standard and 520bhp
You can remap them to 610bhp and a 0-60 of 3.5 secs partly its the 8speed gear box and sports diff ect the tec is outstanding in the new s8. But they are really fast and much more quiet than any other 8 ive driven... Untill you step on the fun peddal