michael, without knowing your driving habits, or the state of your engine's maintenance, it's hard to offer advice.  Not a straughtforward comparison, because mine is a stick shift and a camper, but on my current trip from Oklahoma to Spokane, Washington, (almost exactly 3K miles at this point), I have ranged from 18.24 to 22.58 mpg on 250 mile legs, with an overall average 0f 20.06 mpg.  I drive at 60 mph on inerstates and other major highways, slower on mountain roads and back roads.  Mine has near perfect engine function, and a recent new oil in the transmission.

Good luck, Dave McNeely

---- 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

--
David McNeely