V12 -- half shuts down with normal cruising?
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Joined: Sep 2007
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2007 S 600 / '06 911 Porsche C4S cab
V12 -- half shuts down with normal cruising?
I'm about to get a new S 600 and the MB mechanic said half the bank of the 6 cylinders shuts down with normal driving. But when you step on the gas the power from both banks of cylinders is instantaneous. Hence better gas mileage than the V8 S550.
Anyone know anything about this? Thanks.
Anyone know anything about this? Thanks.
MBWorld Fanatic!
Joined: Oct 2006
Posts: 2,240
Likes: 5
From: New Jersey
E550 4MATIC
I know that the W220 V12 did this, but I'm not sure if they got rid of it when they switched to twin turbo in MY 2003.
EDIT: Not sure if this is true, but Wikipedia confirms what I said; that active cylinder control was only used on the normally aspirated V12 used in the S and CL 600s for MY 2001 and 2002.
http://en.wikipedia.org/wiki/Active_Cylinder_Control
EDIT: Not sure if this is true, but Wikipedia confirms what I said; that active cylinder control was only used on the normally aspirated V12 used in the S and CL 600s for MY 2001 and 2002.
http://en.wikipedia.org/wiki/Active_Cylinder_Control
Super Member
Joined: Sep 2007
Posts: 562
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From: East Bay Area, CA
2013 SL 550 (Previously 2012 Porsche Panamera Turbo-S, 2015 Tesla P85D, 2007 S600, 2005 E55 AMG)
I have a brand new 2008 S600 (just gone over 1000 miles) and there is no indication that this is happening... Nothing is mentioned in the manual either...
In terms of gas mileage I can get around c. 19 mpg cruising on the freeway. This is definitely where the S600 is in its element and the range is around 300 miles on one tank according to the trip computer... (Engine speed is usually around 1750 - 2000 rpm) In the very worst stop and go traffic crawl it gets down to 9-10 mpg...
Between 11 - 15 mpg seems normal off the freeway...
...but gas economy is not why you buy a V12!
Chris
In terms of gas mileage I can get around c. 19 mpg cruising on the freeway. This is definitely where the S600 is in its element and the range is around 300 miles on one tank according to the trip computer... (Engine speed is usually around 1750 - 2000 rpm) In the very worst stop and go traffic crawl it gets down to 9-10 mpg...
Between 11 - 15 mpg seems normal off the freeway......but gas economy is not why you buy a V12!
Chris
MBWorld Fanatic!
Joined: Oct 2006
Posts: 2,240
Likes: 5
From: New Jersey
E550 4MATIC
I have a brand new 2008 S600 (just gone over 1000 miles) and there is no indication that this is happening... Nothing is mentioned in the manual either...
In terms of gas mileage I can get around c. 19 mpg cruising on the freeway. This is definitely where the S600 is in its element and the range is around 300 miles on one tank according to the trip computer... (Engine speed is usually around 1750 - 2000 rpm) In the very worst stop and go traffic crawl it gets down to 9-10 mpg... Between 11 - 15 mpg seems normal off the freeway...
...but gas economy is not why you buy a V12!
Chris
In terms of gas mileage I can get around c. 19 mpg cruising on the freeway. This is definitely where the S600 is in its element and the range is around 300 miles on one tank according to the trip computer... (Engine speed is usually around 1750 - 2000 rpm) In the very worst stop and go traffic crawl it gets down to 9-10 mpg...
Between 11 - 15 mpg seems normal off the freeway......but gas economy is not why you buy a V12!
Chris
Thread Starter
Senior Member
Joined: Sep 2007
Posts: 330
Likes: 2
2007 S 600 / '06 911 Porsche C4S cab
True enough. Usually those that drive these kinds of cars step on the gas when needed and don't think about the mileage.
btw., my cousin is taking over my '04 S500 and he drives a ton and hence would put cheap gas (regular 87 octane in his Cadillac) to save 100 bucks a month. Bad idea I would think. Will he mess up the Mercedes engine by following in his cheap ***/cheap gas
ways?
btw., my cousin is taking over my '04 S500 and he drives a ton and hence would put cheap gas (regular 87 octane in his Cadillac) to save 100 bucks a month. Bad idea I would think. Will he mess up the Mercedes engine by following in his cheap ***/cheap gas
ways?
