I read somewhere that, on recent model (better streamlined) vehicles, at
high speeds you may get better mileage with AC-on/windows-closed that you
would with AC off/windows-open. It explains that open windows disturbs the
streamlining greatly increasing the drag to the point that it draws greater
engine power than the AC. I haven't tried it myself - just wondering if you
folks have experienced this.


"Lee Florack" <lflorack@rochester.rr.com> wrote in message
news:bi8qj05f79t5q3i9sn1k5i8b8v57e29dvl@4ax.com...
> On Tue, 07 Sep 2004 01:21:35 GMT, "E. Meyer"
> <e52.meyer0SPAM@ieee.org> wrote:
> >
> >The best my '00 TL has never done was 33 MPG, and that was only once and
> >involved driving out an entire tank of gas non-stop from fillup to empty
on
> >the Interstate with the cruise control set at 79, the AC off and the
windows
> >& sunroof open. Otherwise, on the highway it gets 28-30 and around town
> >20-23.
>
> I agree with your best -- 33 at 78 w/o A/C. Back and forth to
> work, I average between 24 and 26.