Audi is busy developing the next A8, which is scheduled to be released at the end of 2009.

The first prototype mules have been sighted near the Nürburgring. Photos show the test car is about three inches longer than the current A8. Power will come from a new V-12 diesel and a new V-10 gasoline engine.

Audi's new A8 will meet strong competition on its introduction. In the same year, BMW will launch the new 7-Series, and the long-awaited Porsche Panamera four-door will also be on sale.

Our photos show a computer illustration of the new A8 and two photos of a prototype mule during testing.

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My @$$!:

It's not that bad. I actually like it. With a few improvements it could be great.

wow that PS does not look good at all

I agree, it`s got potential. I`d like Audi to get rid of that wondow in the C post. That would put the A8 on a whole new design level.

Good to see that they're doing testing four years prior to (or three i should say?), I hope this time around they'll make a class beater instead of a compliment. Here's also hoping that the design will be less restrained than the current car as well.

Doesn't seem that long until the A8 was F/L, how time flies!

That PS looks awful, I sure it will look better than that!

So where does the new V10 petrol fit in, with this power the next S8?

I'm excited with the V12 diesel. Imagine how much torque would that put out...

Compared to the previous S class and current 7 series , A8 really dominated the upper luxury segment. I 'm sure the next A8 will achieve the same.