WelderGuy

Haven't heard much about it from actual owners.

Steve Garrett

I did a test drive in one last Saturday. Shifting was smooth-I liked it.

bluvette2000

How quickly did it respond to the paddles........both up and down shifts?

billeee

Ultra quick paddle response. One of the car mags said it was as fast as the Porsche.

JoesC5

bluvette2000

Not exactly the question. The above info has been out for sometime.

Looking for personal user experience on how immediate the response time is from paddle pull until shift completion. The above info is just shift times in auto mode. Already well known.

Thanks

Skidplate

The third data set is paddle shift data (Tap Mode).

Steve Garrett

Most of the time, I couldn't even tell it was shifting. I had to listen hard to hear it, so the ride was VERY smooth.

JoesC5

"Manoli Katakis


Well, there is a chart in there that displays shift times in comparison to a Porsche PDK. To that end, WOT paddle shifting feels faster than the Porsche, but not as smooth. There's a noticeable thrust (could just be the torque talking) and audible clank with the 8-speed as you climb through the gears. You can hear it pretty clearly in the video. I found it to give the car some personality."


And not being pushed as hard...
http://autoweek.com/video/car-review...-speed-testing

bluvette2000

Thanks. The main question not yet well addressed is the delay from paddle down shift tap to downshift completion.

There have been rumors/comments that there is a delay during manual mode downshifts. Have actual users found this to be true? Particularly in sport and track modes?

123sugey

Thanks for the video. Shifts sounded very nice and probably can be tuned even better

W88fixer

Why do you care? You’re always criticizing the car. Don

fireinv38

has anybody been able to say the A8 is better than the A6 and worth the money. fascinated some would trade in the 2014 for the 2015. what actually is the difference. i know 2 more gears.

WelderGuy

I like cars, and I'm fascinated by the Stingray. Frankly, I wish I had fallen in love with it the way I did with the car I have now, because owning one obviously makes a lot of people very happy.

I recently drove a Porsche Cayman S with the PDK, and it was impressive. It seems to be the benchmark for transmissions, but maybe that's about to change.

NoOne

There is a lot more to PDK than shift speed.

Too many are focused on that and its a small part of what makes a DC a great trans.

BOBSZ06

That video is of the car in Drive mode not Manual mode. Although he did say that the Manual mode was very quick as well.

BOBSZ06

http://www.autoblog.com/2014/08/20/2...ew-quick-spin/

This guy tore into the A6....But the new A8....YES!

"When he reviewed the C7 for the first time, our own Michael Harley had these, not-minced words to say about the existing 6AT:

"The traditional six-speed automatic seemed to extinguish the C7's performance edge. I found it softer, slower and more lethargic (even paddle-initiated shifts had annoying lag). Even though it was every bit as quick in terms of outright acceleration, the gearbox took much of the excitement out of the driving experience."

Clearly there was room to improve.

Thankfully, I can now report that the improvements have been made, and that the new, General Motors-designed Hydra-Matic 8L90 is up to the task of shifting one of the best sports cars in the world. Take heed, 65-percenters.

Driving Notes With some fantastic, many-geared automatic transmissions on the market from specialized companies like ZF, GM engineers knew that their unit would need to be world class. To that end, they concentrated on improving performance without sacrificing durability; all while needing to satisfy the challenging packaging requirements of the Corvette. Aluminum and magnesium have been used to reduce rotational mass, while pressed steel parts can still be found in the torque-bearing bits of the trans. A chain-driven, binary-vane oil pump in the sump has even been optimized for low- and high-speed engine loads. All of that helps to make this 8AT incredibly fast acting and responsive, while also improving fuel efficiency.
And it's strong. The trans was designed around the upcoming Z06, meaning it had to be rated to handle more than 650 pound-feet of torque.
Down to it then. Executing shifts in manual mode feels dual-clutch quick, for sure. The Chevy guys were puffing out their chests talking about the speed of this 8AT versus Porsche's PDK, and the truth is that the reaction time from paddle-pull to upshift is right there. At least, as that's what my imperfect human brain can suss out – any advantage to the quickest dual clutches I've yanked would require a machine to judge."

///ADMAN

Feels dual-clutch quick but is still not actually dual clutch.

Jp23rockstar

Care to explain what that actually means. So is it a good transmission?

dcbingaman

Not born out by the data. The last iteration of A6 is just as quick as the A8.....but reviewer expectations drive their perceptions. The data, inconveniently, doesn't agree. The only way to really tell is a double-blind test (not recommended for cars) or a GPS-type G-meter....the data !!

The two transmissions utilize the same torque convertor and very similar software, so one would be surprised if they acted very differently.

BTW, this topic is

This subject has been