bigdog

i have A 04 CS and i get 13.5 mpg i drive like a granny and i still get it like that ,,and i know its bad b/c i get lil over 200 miles to a tank,,,,what can i do to change this just did a service still hasn't changed thanks guy s

pdxjim

What kind of driving do you do and what is your average speed for this mpg? On the road I get 15-18 mpg. Around town it can be 11 or less :-( depending on the grin factor.

alex911s

i get 15.6 in bay area traffic,LOL 40 mph average speed.

bigdog

mine sez 13.3 and i do surburban driving

mudman2

You must be doing a lot of very short trips, most people are in the 14.2 - 19 range except for some "fun" trips or towing a load which will drop it to around 11.

MadFox

New Avatar.. very nice.. S: 14-16 in city depending on how much "fun".. Highway is 17-19.5 depending on how many times I go over 150mph with the two turbo studs on the forum.

bigdog

so then what can i do to get better gas mileage i'm not driving spirited all the time,,but for it to be that low ,,,what could it be ,,just did 30k service ,,and still the same

ltc

Interesting. I get 525-590 mile range indicator when I fill up and normall average about 18mpg (give or take).
I suppose I could disassemble my Cayenne, leaving no 2 pieces connected, in an attempt to find out why it seemingly gets good mileage.
Wouldn't it be a pisser if the "!" was responsible?

On a more serious note, possible causes for your low mileage:

wheel alignment (you're trying to push 5300#, so it does matter)
fuel mixture
bad spark plug coils/low ignition voltage
low octane gasoline (leading to DME timing retardation)
stuck/dragging brake caliper piston (although you would be able to tell)
dragging E brake shoes (again, you would be able to tell via temperature)
torque converter slip (burnt fluid?)

bigdog

i duno what it could be ,,the dealersghip tried to tell me its b/c b of the gass additives in ny ,,,but thats bull**** i dunno what to do

tkerrmd

Get average of about 18 mpg sometimes better sometimes worse but thats about it.
Lewis, ?Avitar change it to your race car!!!!!
PS, I know its obvious but correct tire pressure is a must!!

ltc

The Cup car isn't quite as good a fit for my personality as this one.
Here's a link to the track appliance (and unfortunately, the Black Sheep of the Porsche flock in the background):
https://rennlist.com/forums/attachme...chmentid=74260

Torags

Me too (but never has seen 18).

skl

I can get 19 when just cruising on the interstate at 75-80 in warm weather. probably mid teens or a little less around town. Don't ask about when towing (8-9 depending on wind etc.). Didn't really buy it expecting good mileage- considering how much it weighs it's not bad.

alex911s

avatar courtesy of Kirby's 20D
I dont use the CTT during work week, sometimes friday, usually get 17-18 with no traffic, that's of course 60-75mph. Havent tried 150mph yet , That'll be crazy here in Silicon Valley, fastest I've gone was 120mph me and my wife early morning on highway 5 going towards LA , was gonna go faster but my K40 started beeping,my wife had that grin on her face when we passed the CHP at 75mph.LOL

ltc

I wasn't going to ask