I thought our tanks were 14.8 or 15 gallons. But what do I know, I never let it go lower than half

 

i have a 15 gallon tank (or VERY close to there) i know its not 16. and i use 91 octane religiously (i would use 93 if i could get my hands on it!)

 

i use 93 octane religiously and i would use 91 if i could get my hands on it....

87. 89 and 93 here.... verry annoying... i used 89 when i first got my car then switched over to 93 after about a week

 

My 2.8 goes through 1/4 of a tank from my house to outer Chicago suburbs which at 16 gallons in the tank seems to be 28-30mpg its 118 miles. Thats at 80-90mph the whole way takes just over 2 hours. 32 in the 1.8 sounds about right to me.

 

You guys are changing my mind back the other way! Keep it up!

 

when i took my car to Pennsylvania, its like a 400mile round trip. car had a full tank, i think i used a little over a 1/4 to get all the way there with 2 stops and another 1/4 on the way back

 

This is definitely sounding better. I appreciate everyone's input.

 

i get 22.4 just about every tank of gas i get and i drive with cruise on 55 on the way to and from work..
thats with the occasional very heavy foot to get past slow drivers
when i drove to idaho falls from boise 2 weeks ago a 4 hour drive i got 27.8

 

Here are people's actual MPGs: http://www.fuelly.com/car/audi/nozero

My a6 2.8 (mind you it weighs 5000lbs) has gotten 28.4 on a very long trip, usually around 22 while driving normally (it's really hilly up here in the U.P.)

 

If I'm not mistaken the fuel tanks are as follows: FWD is 16.5 Gallons. Quattro is 15.5 gallons. Tank to tank with no real highway driving is 24 to 25 Mpg figured the correct way. Not by computer or miles per tank.