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Old 11-25-2008, 12:06 PM   #1
AVANTI R5
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Default Spied: Next-generation Audi A8

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Following closely on the heels of the first sighting of Audiís upcoming A7, our spy photographers have captured the first images of the next-generation A8. Although the pictures arenít of the highest quality, they are the first of the A8 in its own sheet metal.

Under the new sheet metal will be an extended version of the modular platform used in the A4, but expect to see more exotic materials such as aluminum and magnesium employed to help save weight and improve dynamics.
The A8ís engine lineup will likely mirror the current range, starting with a 2.8-liter V6, and topping out 4.2-liter V8 FSI. And, possibly, Audiís new 6.0L V12 TDI will be offered.
And like the A7, there will also be more supercharged units as well as increased application of Audiís latest valve-lift system. The base model will remain front-wheel drive, but all-wheel drive variants will feature the latest Quattro torque vectoring systems, which distributes drive individually between each axle and between the rear wheels for improved traction and stability.
http://www.leftlanenews.com/audi-a8-future.html







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Old 11-25-2008, 12:08 PM   #2
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Looks great.

Nick
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Old 11-25-2008, 12:12 PM   #3
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Looks-wise, it doesn't look all that different from the current A8. The back end might be stubbier. These have never looked like $80k cars to me (not that a lot of Audis look or support their asking price to begin with).

-Mike
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Old 11-25-2008, 12:15 PM   #4
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not really liking it, but I'll wait for the airbrushed and massaged pics to case my final vote.

That rear pillar is sorta foul.
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Old 11-25-2008, 01:15 PM   #5
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Jebus Christ, talk about front overhang!

By comparison, a couple of it's fellow competitors:





You can tell that they are trying to play-up the R8-look on this car (especially in the headlight/hood area), but damn it's proportions are just awful.
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Old 11-25-2008, 01:51 PM   #6
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^
Isn't that overhang required to package the AWD system?
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Old 11-25-2008, 02:07 PM   #7
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^^ The A8 (like most Audis) is predominantly a FWD car... the AWD is kind of a "retrofit". I think Audi did something stupid in the new A4 like move the engine forward... ahead of the front axle or something like that to let the tranny fit. (I hope some Audi-guy can clear up my info because I admit to not remembering the whole story). This A8 is loosely based on that A4 platform.

Also, note that I believe all the cars I posted have AWD availability...they are also all RWD-based.
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Old 11-25-2008, 02:43 PM   #8
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Quote:
Originally Posted by Hazdaz View Post
I think Audi did something stupid in the new A4 like move the engine forward... ahead of the front axle or something like that to let the tranny fit.
Isn't that pretty much every Audi since VW rekindled the brand in the 70s? Or did they somehow move it up even more for some fancy pants tranny?
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Old 11-25-2008, 02:51 PM   #9
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the a8 does not compete with the bmw 5-series or cadillac cts. the a8 is made to compete with the 7-series and s-class, maybe the cadillac sts.
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Old 11-25-2008, 02:53 PM   #10
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Holy overhang. Worse than on Subys.
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Old 11-25-2008, 03:07 PM   #11
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Quote:
Originally Posted by Hazdaz View Post
^^ The A8 (like most Audis) is predominantly a FWD car... the AWD is kind of a "retrofit". I think Audi did something stupid in the new A4 like move the engine forward... ahead of the front axle or something like that to let the tranny fit. (I hope some Audi-guy can clear up my info because I admit to not remembering the whole story). This A8 is loosely based on that A4 platform.

Also, note that I believe all the cars I posted have AWD availability...they are also all RWD-based.
The engines on the A6 and A8 are longitudinally positioned. The tranny is behind the engine like a traditional RWD layout. At the tail of the tranny there's a transfer case and foward driveshaft that runs back up to the front axle/diff. It's the same basic layout as BMW's system.

You're correct that the A4/TT platform has a transverse engine/tranny layout like a traditional fwd car. (Also similiar to the EVO AWD layout)

There's almost no similarity between the the A4/TT and A6/S6/A8/R8 drivetrain layouts, other than the brand Quattro.

Duncan
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Old 11-25-2008, 03:09 PM   #12
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Here's an S8 cutaway that shows the engine position. Unfortunately you can't really see the foward driveshaft as it's on the other side of the car.

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Old 11-25-2008, 03:29 PM   #13
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Originally Posted by dunk View Post
The engines on the A6 and A8 are longitudinally positioned. The tranny is behind the engine like a traditional RWD layout. At the tail of the tranny there's a transfer case and foward driveshaft that runs back up to the front axle/diff. It's the same basic layout as BMW's system.

You're correct that the A4/TT platform has a transverse engine/tranny layout like a traditional fwd car. (Also similiar to the EVO AWD layout)

There's almost no similarity between the the A4/TT and A6/S6/A8/R8 drivetrain layouts, other than the brand Quattro.

Duncan


There is so much misinformation here, I don't know where to begin.

The basic layout for Audi "Quattro" is what subaru used as a template. go look at your car and get back to me.

The Quattro (as used in the A4,A5,A6,A8) is AWD first. Some versions are changed for lower cost in the A4 for FWD.

The AWD in the A3 and TT are from VW and are transverse motors with a FWD first setup. This is radically different from the rest of Audi's line.

(Also, the R8 is really a lambo and uses a different AWD system as well).

As far as the A4,A5,A6,A8 layout, which dates back to 1980, the motor is mounted longitudinally. Behind the motor is a casing that houses a transmission, front differential, and center differential. This saves weight over the BMW/MB/Infinity type system which is rear drive with a center gear after the tranny, a small shaft going forward next to the engine, and a front differential.

The benefit is overall reduced weight of the AWD system, and a better balanced system as it is "symmetrical" (again, Subaru borrowed the basic design). The inherent problem is that the front axles connect to this tranny/diff housing, requiring the motor to be mounted fully in front of the front axle line.

Subaru and Audi share this issue. Subaru has used smaller engines to keep the motor short, and a boxer layout to keep it low. Audi used only I4 and I5 engines for a while, and this worked reasonably well. However, and they have fitted V8 and V10 motors, the front-heavy nature is exaggerated. The newer Audis actually angle the axles forward, to push the motor back a bit, but it is what it is.

As far as this car, I don't mind the front. It helped the car guy in Ronin to shove a bit anyway. I find the C-Pillar to be a bit thick for this car, and gives it almost a Bentley stance. I like it on a Bentley, but not on an Audi for some reason.


Actually, I can see that the back piece of glass is blacked out, and you can see the trim where the window actually is.
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Old 11-25-2008, 03:40 PM   #14
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So Audis never went to DFD (divorced front differential)? The holy long overhang would suggest they did not.
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Old 11-26-2008, 02:24 PM   #15
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Quote:
Originally Posted by unclemat View Post
So Audis never went to DFD (divorced front differential)? The holy long overhang would suggest they did not.
the most they've done is to pull the engine/tranny back a bit and angle the front axles forward. the A5 was the first use and it did help by an inch or two.

They won't divorce the diffs since it would detract from the whole point of Quattro in minimizing the weight of the entire AWD system.
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