S4 (B6 & B7 Platforms) Discussion Discussion forum for the B6 Audi S4 produced from 2003-2005 And B7 Audi S4 produced from 2005 -2008

how many of you really suffer from the S4's drinking GAS??

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Old 11-14-2007, 09:55 AM
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and how many cylinders does a 540 have?
Old 11-14-2007, 09:59 AM
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Default 2nd, cant complain if you have a portly sedan w a v8 under the hood. However I do...

wish the tank was bigger therefore reducing the trips to the gas station. This lead me to buy a gas-sipping DD which i highly recommend.
Old 11-14-2007, 10:12 AM
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I had a 97 540 and occasionally got 26 hwy. Now I am lucky to get 21
Old 11-14-2007, 10:16 AM
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70 to 80mph usually, but this is on road trips of over an hour at least.
Old 11-14-2007, 10:17 AM
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No, I actually agree with you. Taller gearing would increase fuel economy but decrease performance.
Old 11-14-2007, 10:20 AM
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exactly. you'll get 24-25 at 55-60, then it's downhill, and gone by 75+
Old 11-14-2007, 10:22 AM
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Default Screw "gearing"...they could have had an actual overdrive gear, namely the 6th...

and then those who say these are designed for the autobahn, bla bla blah...who's hitting the 170mph top speed on the autobahn on a daily basis? I'd be ok with 159 in 5th.
Old 11-14-2007, 10:36 AM
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V8 4.4 liter
Old 11-14-2007, 10:54 AM
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Default It is a "overdrive" input shaft on the trans turns less than the output.

3k rpm at 80 is perfect...any lower and you would have to down shift just to get up a hill
Old 11-14-2007, 10:54 AM
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My TIP gets 24/25 mpg highway at 70-75 mph.


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