Mpg
Team Owner
Joined: May 2004
Posts: 82,175
Likes: 1,319
From: McKinney TX
St. Jude Donor '21-'22-'23-'24
I was trying to tell you that my 2008 base coupe has the automatic transmission, but it is also a 6 speed. You seemed to insinuate in your original post that you were only interested in cars with manual transmissions.
My 08 gets about 15.5 to 16.0 around town, not exactly stop 'n go driving, but almost. However, on the interstate, using the cruise control most of the time, I get about 27 to 27.5 MPG at 75 MPH. My overall MPG is just a little under 22 MPG.
My 08 gets about 15.5 to 16.0 around town, not exactly stop 'n go driving, but almost. However, on the interstate, using the cruise control most of the time, I get about 27 to 27.5 MPG at 75 MPH. My overall MPG is just a little under 22 MPG.
Team Owner
Joined: Sep 2005
Posts: 29,113
Likes: 2,194
From: Big Bend Country, TX
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15- '16-'17-‘18-‘19-'20-'21
NCM Lifetime Member
Melting Slicks
Joined: Oct 2007
Posts: 2,702
Likes: 192
From: Northwestern Connecticut
St. Jude Donor '10 thru '26
06 z06 gets ~20mpg on secondary highway with a bit of in town but not city driving (18 if I'm driving a bit more spirited) , 27-28 highway. my grand sport gets about the same so far but I only have 2k miles on it so it may loosen up.
(the camaro's old motor managed 9-10mpg city!)
(the camaro's old motor managed 9-10mpg city!)
Drifting
Joined: Oct 2006
Posts: 1,340
Likes: 6
From: Redmond WA
City driving depends too much on conditions and will be all over the place.
I have a 2011 base coupe with A6 and 2.56 rear. The very best fuel mileage I've gotten is 34.2 MPG driving 180+ miles at speeds between 65 and 70 MPH on a cool day (no A/C) in moderate traffic on a flat interstate (Portland, OR to Redmond, WA). Have gotten over 30 MPG several other times cruising at speeds up to about 75 MPH.
A "zero toe" alignment and slightly lowering the front ride height got me 2-3 MPG on the freeway.
I have a 2011 base coupe with A6 and 2.56 rear. The very best fuel mileage I've gotten is 34.2 MPG driving 180+ miles at speeds between 65 and 70 MPH on a cool day (no A/C) in moderate traffic on a flat interstate (Portland, OR to Redmond, WA). Have gotten over 30 MPG several other times cruising at speeds up to about 75 MPH.
A "zero toe" alignment and slightly lowering the front ride height got me 2-3 MPG on the freeway.
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Melting Slicks
Joined: Nov 2004
Posts: 2,223
Likes: 12
From: "No matter where you go... there you are"...."You cannot drive a dollar bill". ...and remember... "D
06 z06 gets ~20mpg on secondary highway with a bit of in town but not city driving (18 if I'm driving a bit more spirited) , 27-28 highway. my grand sport gets about the same so far but I only have 2k miles on it so it may loosen up.
(the camaro's old motor managed 9-10mpg city!)
(the camaro's old motor managed 9-10mpg city!)
My Z gets around 21....if I am good....around town....
If I am really good on the highway......which I am not very often....I can get the 27-28....
.....but truly because of that growth of lead on my right foot..... I am lucky to get 23 on the highway......
then again , I didn't buy it for the gas mileage.......but then again, the 427 is truly a piece of work....what with that much horsepower and actually great gas mileage.....as 68 states......
Drifting
Joined: Mar 2010
Posts: 1,639
Likes: 19
From: Woodstock And Grateful to God GA
Just took the Z from Atlanta GA to Beaufort SC to see my Marine son before his deployment. All interstate on the return trip with cruise set to 70 and the DIC read 30.5 when I got home. 
Team Owner
Joined: Sep 1999
Posts: 41,732
Likes: 1,718
From: Springfield MO
2009 Z06 and I get 28-29 MPG on the highway. Don't really know the around town gas mileage as I don't drive it daily to burn enough gas to get a reading, before taking it on the highway.
Le Mans Master
Joined: May 2005
Posts: 6,640
Likes: 279
From: Muscle Shoals, AL
Cruise-In VI Veteran
Cruise-In VII Veteran
My 2011 6 speed GS with LS3 got about 23-24 mpg highway.
My 2012 Centennial Z06 gets about 21-22 mpg highway. (But well worth the trade off.....
)
My 2012 Centennial Z06 gets about 21-22 mpg highway. (But well worth the trade off.....
)
Le Mans Master
Joined: Jun 2009
Posts: 6,724
Likes: 652
2006 Z06 with ZR1 aero, MF103 CAI, and 345/30/19's on the rear...in AZ.
The car can get a steady cruise MPG on flat ground with no head or tail wind of 35 MPG, while still running just over 80 MPH.
My 200 mile trips between Tucson and Phoenix AZ.....going "up" in elevation to Tucson can net me averages in excess of 30 MPG.
Going "down" in elevation back to Phoenix can get me almost an MPG extra, at 31+ .
My DIC seems to be within .5 MPG from my calculated numbers when I do the miles divided by gallons pumped to full fuel.
Remarkable machine
The car can get a steady cruise MPG on flat ground with no head or tail wind of 35 MPG, while still running just over 80 MPH.
My 200 mile trips between Tucson and Phoenix AZ.....going "up" in elevation to Tucson can net me averages in excess of 30 MPG.
Going "down" in elevation back to Phoenix can get me almost an MPG extra, at 31+ .
My DIC seems to be within .5 MPG from my calculated numbers when I do the miles divided by gallons pumped to full fuel.
Remarkable machine
Race Director
Joined: Mar 2001
Posts: 14,769
Likes: 33
From: Out west in the mountains
Melting Slicks
Joined: Oct 2007
Posts: 2,702
Likes: 192
From: Northwestern Connecticut
St. Jude Donor '10 thru '26
