It's a trick that new car makers do so that they can make the EPA MPG
requirement... The TR-6 was before they had to worry about it so the TR-6
should be the correct trip mileage......:) Bob
----- Original Message -----
From: <SamuelsMA@aol.com>
To: <6pack@autox.team.net>
Sent: Sunday, April 30, 2006 10:44 PM
Subject: Speedometer/Odometer
> Anyway, it occurred to me that I didn't know if either my speedo or
> odometer
> was accurate, which would affect my calculation. So I had my son drive
> his
> 2005 Jetta on the highway and set a speed of 60 mph on a straight
> stretch. I
> stayed behind him, neither gaining nor losing ground. My speed read
> 59.5,
> which is close enough for me. However, we set our trip odometers at the
> beginning and end of the trip, and mine read 4% low compared to his.
>
> My question is, why would our speedometers agree almost perfectly, but our
> odometers be different by 4%? Also, is 18 mpg (or really 17, when you
> take
> the odometer inaccuracy into account) in mixed driving (but plenty of
> highway at
> about 65 mph) similar to others with similarly modified, non-overdrive
> cars?
>
> Thanks!
>
> Michael
> '76 Tahiti blue
> CF 57044U
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