On Jul 11, 8:11*pm, DK wrote:

I'd be very happy with 20mpg. *My X5 4.8 has horrible gas mileage - 18
average. *We did order the Z4 3.0si - not as a replacement - and it is
advertised as 18/27. *It will be interesting to see what the real number
is.- Hide quoted text -

- Show quoted text -

I think this is the range that we're in. We have the Mercedes SLK-55
AMG (5.5L V8, 360hp) and it get about 20mpg regardless of where or how
it's driven (well, unless I get 'spirited' - then it DROPS.) Luckily
we have a Jetta TDI as our daily driver and that hits the 45-47mpg
range. I wouldn't want to have to drive the SLK (with the premium
gas) to work everyday !

----------------------------------
GDSmith
Harpers Ferry, WV

FOR SALE: 2003 Baja 242 Islander
http://ICanHelp56.homestead.com/Baja001.html

On Jul 11, 7:44*pm, "Eisboch" wrote:
In these days of high fuel prices and being "green", I love it when people
smugly comment about how my 911 TT *must be "terrible"
in terms of gas mileage.

Today, for kicks, I reset the car computer that calculates MPG as I entered
onto a limited access highway heading back from the Cape.
I drove for approximately 35 minutes, at speeds ranging from 60 -75 mph,
mostly 65-70 mph. *I didn't do anything special in terms of driving
techniques ... just drove normally.

At the end of the 35 minutes, the computer calculated mileage display read
"28.9 mpg".
My "normal" average of combined around town and highway driving is usually
about
20-21 mpg unless I have done some sustained "spirited" driving.

Not bad, all things considered, and the look on people's faces when I tell
them what it gets for mileage is usually one of disbelief.

It really is an amazing car, given 445hp, it's performance and it's fuel
economy.
I should drive it all the time.

Eisboch

For a highway only trip that is not surprising.. As you stated in
another reply to this thread that car is light and the body is
aerodynamically designed.

Let us know what the old fashioned (the method I use) method shows.

On Sat, 12 Jul 2008 13:19:45 -0700 (PDT), JimH
wrote:

On Jul 11, 7:44?pm, "Eisboch" wrote:
In these days of high fuel prices and being "green", I love it when people
smugly comment about how my 911 TT ?must be "terrible"
in terms of gas mileage.

Today, for kicks, I reset the car computer that calculates MPG as I entered
onto a limited access highway heading back from the Cape.
I drove for approximately 35 minutes, at speeds ranging from 60 -75 mph,
mostly 65-70 mph. ?I didn't do anything special in terms of driving
techniques ... just drove normally.

At the end of the 35 minutes, the computer calculated mileage display read
"28.9 mpg".
My "normal" average of combined around town and highway driving is usually
about
20-21 mpg unless I have done some sustained "spirited" driving.

Not bad, all things considered, and the look on people's faces when I tell
them what it gets for mileage is usually one of disbelief.

It really is an amazing car, given 445hp, it's performance and it's fuel
economy.
I should drive it all the time.

Eisboch

For a highway only trip that is not surprising.. As you stated in
another reply to this thread that car is light and the body is
aerodynamically designed.

Let us know what the old fashioned (the method I use) method shows.

It's all in how they engineer the gearing. Like Eisboch said, the
engine is loafing - and it's got the torque to loaf.
I'm guessing that's one reason pushrod cars like the GM's I drive
outdo the OHC Accords and Camrys in highway MPG - last I looked
anyway. I think the Impalas with the 3.4 (3.5?), which are heavier
and roomier than the competition beat them in highway MPG.
The GM lockup torque converter does wonders for milage starting at
about 35-40 mph. Not looking for an argument about pushrod vs OHC,
or claiming any special knowledge about it.
I agree on not putting complete trust in the computer generated MPG
figures. "Trust but verify."
Last year on the way to Florida in my '97 Lumina 3.1 I used the fill
up method during the trip. After a couple tanks at 65 mph cruise
control, no A/C , it was a hair below 32 mpg. I lost my self control
after that and was doing 75-85, with hilly/mountainous terrain to
boot. I checked again and it had dropped to about 30 mpg. I think I
did a final when I got home and it was about 29 mpg.
I don't have a good handle on the "city" commuting MPG because I never
checked it closely. Too variable and dependent on traffic conditions.
I'd guess about 20 mpg for what "city" driving we do, which doesn't
involve a lot of creeping and idling.

--Vic

On Fri, 11 Jul 2008 19:44:38 -0400, "Eisboch" wrote:



In these days of high fuel prices and being "green", I love it when people
smugly comment about how my 911 TT must be "terrible"
in terms of gas mileage.

Today, for kicks, I reset the car computer that calculates MPG as I entered
onto a limited access highway heading back from the Cape.
I drove for approximately 35 minutes, at speeds ranging from 60 -75 mph,
mostly 65-70 mph. I didn't do anything special in terms of driving
techniques ... just drove normally.

At the end of the 35 minutes, the computer calculated mileage display read
"28.9 mpg".
My "normal" average of combined around town and highway driving is usually
about
20-21 mpg unless I have done some sustained "spirited" driving.

Not bad, all things considered, and the look on people's faces when I tell
them what it gets for mileage is usually one of disbelief.

It really is an amazing car, given 445hp, it's performance and it's fuel
economy.
I should drive it all the time.

Doesn't surprise me in the least. It' s a properly engineered car
with engineered gearing and weight to horsepower ratios. Add in the
aero packages, the fact that it's properly balanced and you've got
efficient power application up the hoo hoo.

My 'Vette is an entirely different story. When I took the blower off
and downsized from twin 950 Holleys to single, put the rear end back
to street legal and changed over from street drag slicks to street
legal tires, the mileage went up marginally - from about 6 mpg to
maybe 10. I went from 645 hp on a dyno to just south of 400 hp.

Think it might help if I took the 3/4 cam and NOX out of it? :)

On Jul 12, 9:10*pm, Short Wave Sportfishing
wrote:
On Fri, 11 Jul 2008 19:44:38 -0400, "Eisboch" wrote:

In these days of high fuel prices and being "green", I love it when people
smugly comment about how my 911 TT *must be "terrible"
in terms of gas mileage.

Today, for kicks, I reset the car computer that calculates MPG as I entered
onto a limited access highway heading back from the Cape.
I drove for approximately 35 minutes, at speeds ranging from 60 -75 mph,
mostly 65-70 mph. *I didn't do anything special in terms of driving
techniques ... just drove normally.

At the end of the 35 minutes, the computer calculated mileage display read
"28.9 mpg".
My "normal" average of combined around town and highway driving is usually
about
20-21 mpg unless I have done some sustained "spirited" driving.

Not bad, all things considered, and the look on people's faces when I tell
them what it gets for mileage is usually one of disbelief.

It really is an amazing car, given 445hp, it's performance and it's fuel
economy.
I should drive it all the time.

Doesn't surprise me in the least. *It' s a properly engineered car
with engineered gearing and weight to horsepower ratios. Add in the
aero packages, the fact that it's properly balanced and you've got
efficient power application up the hoo hoo.


As I already said.

On Sat, 12 Jul 2008 18:52:23 -0700 (PDT), JimH
wrote:

On Jul 12, 9:10*pm, Short Wave Sportfishing
wrote:
On Fri, 11 Jul 2008 19:44:38 -0400, "Eisboch" wrote:

In these days of high fuel prices and being "green", I love it when people
smugly comment about how my 911 TT *must be "terrible"
in terms of gas mileage.

Today, for kicks, I reset the car computer that calculates MPG as I entered
onto a limited access highway heading back from the Cape.
I drove for approximately 35 minutes, at speeds ranging from 60 -75 mph,
mostly 65-70 mph. *I didn't do anything special in terms of driving
techniques ... just drove normally.

At the end of the 35 minutes, the computer calculated mileage display read
"28.9 mpg".
My "normal" average of combined around town and highway driving is usually
about
20-21 mpg unless I have done some sustained "spirited" driving.

Not bad, all things considered, and the look on people's faces when I tell
them what it gets for mileage is usually one of disbelief.

It really is an amazing car, given 445hp, it's performance and it's fuel
economy.
I should drive it all the time.

Doesn't surprise me in the least. *It' s a properly engineered car
with engineered gearing and weight to horsepower ratios. Add in the
aero packages, the fact that it's properly balanced and you've got
efficient power application up the hoo hoo.


As I already said.

Yes Jim - we all know you are a genius and a GOD....

"Short Wave Sportfishing" wrote in message
...



My 'Vette is an entirely different story. When I took the blower off
and downsized from twin 950 Holleys to single, put the rear end back
to street legal and changed over from street drag slicks to street
legal tires, the mileage went up marginally - from about 6 mpg to
maybe 10. I went from 645 hp on a dyno to just south of 400 hp.

Think it might help if I took the 3/4 cam and NOX out of it? :)


The '67 GTO needs 91 octane or better and even then it will still "knock" a
bit if you get on it.
So, I don't. I thought about retarding the timing a little, but I drive the
car very infrequently and baby it when I do.
I'll just leave it alone.

The '63 Galaxie with a 390 seems very happy on 91 octane. Again, I only
drive it for a few hours per month, so it's 10 mpg isn't a big issue.

It just cracks me up that the Porsche and the Sprinter .... one a high
horsepower performance orientated vehicle, the other a diesel powered RV,
get the best fuel mileage of all our vehicles ..... except the motorcycles.

Eisboch

Just to add some boating content to this thread:

http://gizmodo.com/gadgets/boats/fir...cht-238000.php

Eisboch

On Sun, 13 Jul 2008 02:46:10 -0400, "Eisboch" wrote:


Just to add some boating content to this thread:

http://gizmodo.com/gadgets/boats/fir...cht-238000.php

Slick llooking - I'll give it that.

Not a lot of fishing space though. :)

"Short Wave Sportfishing" wrote in message
...
On Sun, 13 Jul 2008 02:46:10 -0400, "Eisboch" wrote:


Just to add some boating content to this thread:

http://gizmodo.com/gadgets/boats/fir...cht-238000.php

Slick llooking - I'll give it that.

Not a lot of fishing space though. :)


I read about these before. Porsche really has nothing to do with them other
than the fact that Fearless contracted the Porsche design group to come up
with the "look".

Eisboch