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Cylinder Deactivation - 2014 S8

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Old 03-08-2013, 09:31 AM
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I'll throw in my 0.02 cents as well. I've had Audi S4 and most recently the previous generation S6 ( 2008 with the V10). Fantastic cars, stable and very enjoyable. My wife loved the car so much that she didn't want to sell it.

I also had an SL55 AMG and the sound was amazing. In the end, I sold our S6 and we picked up an 12' ML63AMG and now my wife no-longer wishes for the S6! I recently just got a Maserati Granturismo MC and I no-longer wish for an SL55.

Given you can get an E63 AMG with AWD this fall I would seriously consider AMG's. I'll more than likely move from the Maserati to an S8 in 3 years or so.

Al
Old 03-11-2013, 05:04 AM
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Does cylinder deactivation kick in at 90+ mph on the highway?
Old 03-11-2013, 05:10 AM
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Originally Posted by s5blitzer
Does cylinder deactivation kick in at 90+ mph on the highway?
At a steady 90mph, its running green mode for me still. I think the max you can do in 4 cylinders is 125mph. Hard to test since you need steady cruiding on a flat road for a bit.
Old 03-11-2013, 05:15 AM
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Originally Posted by L0U
At a steady 90mph, its running green mode for me still. I think the max you can do in 4 cylinders is 125mph. Hard to test since you need steady cruiding on a flat road for a bit.
Thank you!
Old 03-11-2013, 05:52 AM
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How do you know when you are in 4 cylinder mode?
Is there an indicator in the instrument cluster?
Old 03-11-2013, 07:12 AM
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Originally Posted by mgiannetto
If you don't mind my asking, which AMG did you have (yr/model), which Audi did you buy (yr/model) and subsequently replace and how long did you own it, and what are you driving now? How do you compare the cars - pro's/con's of each?
Had an '06 S55 that was a monster engine but poor chassis. Sold that and leased a '09 S8. Was OK but not the greatest. V10 was bragging rites but not nearly as quick as the AMG. Sold that and drive a SL63. Yeah, different car althougher but wow, no complaints here. Get yourself an AMG then back that up like I did with a S4.
Old 03-11-2013, 06:05 PM
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Originally Posted by subterFUSE
How do you know when you are in 4 cylinder mode?
Is there an indicator in the instrument cluster?
I have no indication on my 13 S8, does this mean I don't have it? or is the "eco" indicator only for stop-go mode?
Old 03-11-2013, 07:03 PM
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Originally Posted by RL371
I have no indication on my 13 S8, does this mean I don't have it? or is the "eco" indicator only for stop-go mode?
If it's like my S6, switch it to the fuel mileage screen. When the bar turns green, then it's running on four cylinders.
Old 03-12-2013, 12:05 AM
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Originally Posted by DeerHunter
If it's like my S6, switch it to the fuel mileage screen. When the bar turns green, then it's running on four cylinders.
Thanks for the tip. I'll try that tom. I miss my Heads Up Display from BMW, so I keep it on the digital speedo most of the time
Old 03-15-2013, 09:26 AM
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Originally Posted by DeerHunter
A few additional comments, based on other questions you have:
  • If you want that angry V8 sound, you'll probably have to do an exhaust. Turbo cars are quieter than normally-aspirated equivalents because the turbo acts as a pretty good muffler. Regardless, I don't think you'll ever get the same quality of sound as you enjoy with the AMG.
  • The mid-range response of this motor is incredible. You'll get more torque at lower revs than almost any normally-aspirated engine. This wave of torque is addictive in it's own right.
  • Pretty much any throttle application kicks it out of 4 cylinder mode
  • Shifting between 4 and 8 cylinder operation takes between 1 and 4-hundredths of a second. My "seat-of-the-pants" isn't calibrated that finely, so I don't notice any lag. Perhaps YMMV.
Deerhunter, Would you mind doing a compare/contrast between the V8 S4 you had and the V6 S6 you have now. Would bne interested in your first hand perspective on how the two cars compare including the responsiveness of the motors.


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