Audi 100q 91 5-cylinder - Poor gas mileage

[pasquale pilato]

hello all,
I have a 1990 100q, same engine as Mr. rocco and my
car has the same symptions.  In first gear there is
nothing below 2400 rpm, and I think that for such a
low-performance and small engine I'm at the pump often
with the 93 octane in my hand, in CT now its close to
1.75/gallon.  My problem is I do not have the trip
computer, and my odometer is broken.  I use almost a
1/3 of a tank to go to NYC and back, about 110 miles.
And I would say I have more of an steel alloy right
foot, rather than 100% lead.  I changed the entire
exhaust including the cat but kept the same O2 sensor.
 I was thinking about a tune up (its been 20k miles)
but I learned with cars when you go messing around
with things that work, you (me) make things worse.  I
guess my question is the same as rocco, is the car
heavy, old and inefficient, or does this sound like
something (plugs, O2 sensor???) needs to be looked at,


What is the group MPG for this car.  I heard of the
turbo cars getting better mpg than mine.  thanks

ptp
100q loves ultra.


--- Ti Kan <ti at amb.org> wrote:
> Ralph Rocco writes:
> > 165k mileage.  Getting ~14 mpg according to
> computer.
> > What should be checked ?
> > Weak pick-up/power in 1st gear ?
>
> Could the computer be giving you a false reading?
> Try filling up a tankful
> of fuel, and reset your trip odometer at the same
> time.  Then, at the
> next fillup, look at the amount of fuel you have to
> add.  The actual
> mileage will be that amount divided by the number of
> miles indicated on
> your trip odometer.
>
> If your car is really acting like a gas guzzler and
> your driving situation
> doesn't reflect that (i.e. you are not a leadfoot
> and not all the mileage
> is in stop/go city traffic), then the first thing
> I'd check is the oxygen
> sensor.  That is the number one cause of over-rich
> running conditions.
>

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