re. factory instrumentation accuracy & mpg

Zsolt zsolt1 at
Sun Jan 26 22:23:51 EST 2003

Mine is the same and has been with all 4 of my Audi 5k models I have
owned. I have never seen a better mileage than 26 mpg. In the city I
typically get around 18 mpg, and on my long trips, doing 80 MPH, I get
24 mpg. This is also calculated from the driven distance and filled up
amount of gas, and not by the trip computer.


Chander Balakrishnan wrote:
> I have a 87 5ktq with the 1.8 bar SJM modification, and a 1990 200 avant
> stock.  The best mileage I have gotten with either car with my daily
> driving - a combination of driving around town and highway is 20 -21 mpg (as
> measured by fill ups and miles elapsed, not the computer in the car).  It
> drops a tad, to about 18-20 mpg in summer on hot days.
> Both cars have been on long trips to the East from Chicago, all Interstate
> driving, and the best they have done then is about 24-26 mpg.  These mileage
> numbers are consistent (as I remember) with the numbers on the sticker on
> the 1987 5kcsq (which I still have).  I am surprised at the 28 mpg claimed
> here.  I consider myself a normal driver, neither heavy footed or very light
> footed.  IS there something wrong with my cars or my driving style ?
> Chander
> -----Original Message-----
> From: quattro-admin at [mailto:quattro-admin at]On
> Behalf Of Phil Rose
> Sent: Sunday, January 26, 2003 3:51 PM
> To: Brett Dikeman
> Cc: ben swann; flyboysteve at; quattro at;
> 200q20v at
> Subject: Re: re. factory instrumentation accuracy & mpg
> At 1:10 PM -0500 1/26/03, Brett Dikeman wrote:
>>At 12:24 PM -0500 1/26/03, ben swann wrote:
>>>Yes - peeve # 2 on the new aquisition of the '91 200 20v tq avant.  Has
>>>SJM chip with 2.5 bar pressure transducer AFAIK.  Gas mileage abysmal
>>>on the way home - 20MPG and no I was not easy on the gas and probably
>>>averageing over 70.  My '87 5000 tq would get an easy 28 mpg under the
>>>same conditions.  I thought Motronic was supposed to be superior at
>>>engine management, including economy, over CIS (CIS/motronic).
>>>What's up with that?
> Ben, were you referring to mileage from the on-board computer--or actual
> fill-ups? If the former, don't forget the error in computed MPG may be
> pretty large (mine was at least 10% low) unless the fuel-consumption factor
> is corrected (this is done by an IC adjustment, and I believe my write-up
> about this can be found on Chris Miller's web site.) If you measured by
> odometer and pumped amount, then I dunno.
> I agree that 20 MPG sounds rather low--unless your foot was really into it
> a lot. In my '91 200q, good gas mileage requires an extremely steady
> throttle (irrespective of speed it seems). With very steady cruising I'll
> routinely get 28 MPG even at 80 MPH; however with a lot of passing, hills,
> etc., could easily drop to low 20s.
> Phil
> Phil Rose
> '91 200q lago blue				Rochester, NY USA
> '91 200q tornado red				mailto:pjrose at

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