<VV> GPS to measure MPG

[George Jones]

Don't know that I would agree with your point that instatnaneous MPG is
useless on normal roads. I recently rented a Nissan Ultima with this
feature, and it can be used to help modify your driving habits if fuel
economy is of concern.

YMMV

On Tue, Jul 15, 2008 at 9:50 PM, <FrankCB at aol.com> wrote:

>
> Indicating INSTANTANEOUS miles per gallon is  useless on normal roads.  It
> might make sense on a dyno under lab  conditions, but the value changes
> constantly under real driving  conditions.  We had a 89 Beretta with an
> electronic
> dash that could display  instant MPG or average MPG.  The instant MPG
> varied
> continuously everytime  the road changed slightly even with a constant
> accelerator
> position.  The  AVERAGE MPG was much more useful on a longer trip.
>    If your GPS unit indicates miles traveled from  the time of your last
> fullup, and you noted the amount of fuel taken on the  refill, then the
> math
> involved is simple enough for a grade school kid with a $5  calculator.
>    Frank "calculatingly" Burkhard
>
>
> --
>
>
> George Jones
> --------------------------------
> Tidewater Corvair Club (since 1987)
> Central Virginia Corvair Club (since 2006)
> Corvair Society of America (CORSA)(since 1987)
> '65 Monza Crown V8 Convertible
> http://www.cardomain.com/ride/2397326
> '66 Monza Coupe Custom (in progress)