Bailey B wrote:
> Some new cars have digital mpg sensors and gauges. For those of you
> that have them, how accurate do you think they are?
>
> When on interstate how much difference is their in mpg at 55 mph, 65
> mph, and 65 mph?
>
> A dump truck owner said his gauge reads about 5 mpg on highway, 1 mpg
> on stop and go gravel back roads.
>
Most of todays cars have computers that do the calculations,
using fuel flow to calculate the percentages in finite
detail. They're pretty accurate...
For instance, I own a 300Hp V6, sedan ( around 4000 #). On
Interstate highways, at 55, I get 27.5 mpg, 60 gives around
26, 65 around 25, etc..
A couple years ago, I rented a big caddy at Salt Lake City
to drive to Reno, Tahoe, etc. This was the first year they
mentioned $4.00/gal gas.. Being a bit cautious, I started
out westbound on US 80 toward Bonneville and would only
drive around 60 mph (or less), but I was sightseeing too.
I thought the fuel calculations were way off, but more than
once, the readout said 32mpg and it proved true when I
filled up. On the return, I kept the pedal down, to make my
plane out of SLC and it still got over 28. Of course this
is on mostly, very flat terrain. Much of your MPG will
depend on your driving habits..
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