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Old 12-09-2008, 02:06 PM
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Default Audi A6 3.2 fuel consumption problem

hello everybody. I bought 2005 A6 3.2 FSI quattro (from usa),one thing that troubles me is a fuel consumtion - 12.7mpg (18.5 L/K) (city) No bad simptoms, spark plugs are ok, filters ok, the most strange is that computer diagnosis says everything is perfect (fuel oxygen mix - perfect) guys from the cervice center here, in Georgia (caucasus), say everything is ok.or if somebody had such "strange" problems, could you comment what was the reason. or may be it is realy OK?
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Old 12-09-2008, 03:05 PM
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Originally Posted by lukacio View Post
hello everybody. I bought 2005 A6 3.2 FSI quattro (from usa),one thing that troubles me is a fuel consumtion - 12.7mpg (18.5 L/K) (city) No bad simptoms, spark plugs are ok, filters ok, the most strange is that computer diagnosis says everything is perfect (fuel oxygen mix - perfect) guys from the cervice center here, in Georgia (caucasus), say everything is ok.or if somebody had such "strange" problems, could you comment what was the reason. or may be it is realy OK?
Dirty air filter maybe???
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Old 12-09-2008, 03:49 PM
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no air filter is new, and how much must be fuel consumption? and im using 95 premium
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Old 12-09-2008, 04:33 PM
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What is your consumption based on – display numbers or refill volume at the pump?

What is the mileage of the car?

Is your knowledge on the mileage based on the display readings only?
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Old 12-10-2008, 07:44 AM
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nemohm

1.my consumption based on – display numbers and refill volume at the pump

2.140000km

3.yes it is
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Old 12-10-2008, 07:47 AM
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Try a lower octane fuel.

Bob
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Old 12-10-2008, 12:13 PM
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bob martin
i tryed lower octane fuel but it was worst, can someone tell me how much fuel consumption u have?
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Old 12-10-2008, 02:37 PM
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I wonder if there is something lost in translation with the units of measure.
Can you give us the numbers in liters, along with the distance in kilometers?
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Old 12-10-2008, 03:44 PM
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Stated consumption is - 12.7mpg (18.5 L/K)

My wife can get 14l/100km easily in the city (even 16 l/100 in the winter.

FSI could be very fussy on the fuel brand - I ovrherd (in the dealership) that Audi issued a worning using Shell?!?.

Try clean (purge) the fuel system - injectors, valves, combustion chambers.
There could be carbon deposits one should get rid off.

On a second thought- the valves might not be dirty due to the nature of FSI
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Old 12-10-2008, 03:53 PM
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damn 12MPG!! that sucks!!
i taught mine was bad haha (~22MPG 70/30 hwy/cty)
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Old 12-12-2008, 12:14 PM
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I am having a problem too of this kind. Mine is an old 1998 A6 Quattro. I usually get about 6 to 8 Lts per 100kms. Now I find it could go up as high as 14 Lts to the 100. This is what the computer is showing. It actually fluctuates a lot. The RMP would be the same and the speed the same but I could also see from my fuel gauge that I am consuming more than I should. This is based on the distance I normally travel and the amount of fuel I use.
Any help would be most appreciated.

Thank you.
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Old 12-12-2008, 12:20 PM
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I suppose the poorer gas mileage can be attributed to the use of corn based methanol (or ethanol, not sure which) added to the gasoline in Winter in some regions.
I wonder if your gas mileage would "miraculously" get better in a few months...
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  #13  
Old 12-13-2008, 07:57 AM
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I do not know about the miraculous recovery but I did not have this problem last year.
Could it have anything to do with my transmission?

Thanks
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