Pretty weak IMO. but seeing that this is not an RS model it`s not so bad.
(The V10 should be exclusively for the RS models IMO.)

The 5.2 lt V10 is essentially an evolution of the 5.0 lt V10 used in Gallardo which makes 520 hp in Gallardo SE , so Audi with increased volume and FSI could have made this engine to produce at least 520-530 hp. But Audi believes (just like BMW) that a sedan so big like the A8 doesn't need so much power cause it's the overall package that counts. Instead of focusing on the power the tried to make the car more balanced, safe and easy to drive on a daily basis.
That said as an Audi fan i wish they used a more powerful version of the same engine.

PS. Power is nothing without control. Ask Lindsay if you don't believe me.

Well said, well said Yannis. I think that hp only means so much, w/ all that we've been given by MB and many other makers, our appetites have been overcompensated for, and we forget that power is indeed not everything. I'd rather have a car that could utilize the power it has than a car that has huge hp numbers and no capability of handling it all. Weight will be the new craze soon enough.

It really should make more power besides its already a sturdy car..

S8 weights only 120 kgr more than M5 while it's a class above in terms of size and it has the extra AWD parts so it's relatively lightweight.

How does the S8 compare with the 760 and the S600 in terms of speed. That question is imminent because it's the real market the S8 is competing in. If its quicker then it can compete in todays world. I know BMW 6.0 litre only produces like 438 hp (but im sure its nicely delivered).

I 'm sure the new S600 will be a lot heavier than S8 perhaps 200-300 kgr more. That should give S8 a significant advantage.

I thought the S500`s factory time was 5.4sec.
Those times are very close seeing the S500 has 62 less hp.
Whats up with that.

Why dont you guys wait until the cars have been tested by a carmag.
Even if S500 and S8 are close up to 100 the S8 will be much faster the faster you drive. S8 has a lot more power than a regular S500.

I guess MBs fast 0-100 are due to 7G-Tronic and higher torque figures ..