[s-cars] re S4 mpg

[calvinlc at earthlink.net]

280 miles per tank is abysmal.  That's what I get on my 2001 S4 with 13
gallon fill-ups.  My '92 routinely gets about 385 to 400 miles per tank at a
fill-up of about 18-19 gallons.  18 gallons to go 280 miles is only 15.5
mpg.  Also, on the highway you should easily have gotten somewhere around
425 to 450....I have gotten over 500 on rare occasions in highway only
driving.  Now, if you are filling it up from close to E and only getting 15
gallons in, then it is a problem with your fuel gauge and/or sending unit.
If you are putting in 18 gallons to go 280 miles then O2 sensor, T-stat, or
dirty injectors would be my first 3 places to start.
--Calvin


-----Original Message-----
From: s-car-list-bounces at audifans.com
[mailto:s-car-list-bounces at audifans.com]On Behalf Of George Verbryck
Sent: Wednesday, November 14, 2007 10:13 AM
To: s-car-list at audifans.com
Subject: [s-cars] re S4 mpg


Sorry the car in question is a 1993 S4 , thanks for all the responses. Seems
like maybe my mileage is not that much off of normal . Its just that when I
bought this car in Salt Lake City and drove it home to California over about
1300-1400 miles I consistently got 375+ miles per tank and now I am getting
maybe 280 miles to the tank still almost all highway driving around 80mph.
100 miles difference seems pretty large to me so thought I would ask. Having
had a V8 previously I am no stranger to poor mileage I just thought it would
somehow be better in the S4. :(
Now I saw the most recent post about the spark plug 22 ftlb of torque and
realize I did not do this when I installed my plugs it is best to just check
them or take them out and reinstall them? I do not want to rebuild my head !
Thanks George


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