First, it's an automatic so don't expect too much more than that - maybe up
to 18 at best? I'll volunteer the cheapest, easiest thing you can do: put in
some fuel injector cleaner with your newly full tank. I used the Lucas
stuff. My VW parts shop guy swears by it twice a year. No need to use the
more expensive Red Line stuff which he claims is for racing engines. I'd
also check your distributor cap, rotor and wires. Are they recent? If
they're not sparking well, you might not be using all your fuel efficiently.

-Peter

On Tue, Jul 20, 2010 at 2:58 PM, Michael Sullivan <sandwichhead@gmail.com>wrote:

> I have a 91 GL Auto with approx 188K miles.  I tracked a recent tank from
> empty to empty again.  I put in 14.4 gallons and got 218 miles out of it.
> This equates to only 15.14 mpg.  A/C was off majority of time. This sucks
> worse than I thought.  These are a mix of highway and city miles.  Can I
> get
> some suggestions on improving this, please?
>  Michael in San Antonio
> P.S. No engine conversion suggestions, please.  Thanks in advance.
> 91GL Weekender AT 2.1L 'Gringo'
> 73 Beetle
>