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Old 04-07-2010, 12:25 AM   #4 (permalink)
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Join Date: Sep 2008
Location: Nyack, NY
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BMW - '97 BMW 318ti
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If the odometer is consistent with the MPGuino's reported distance, then the MPGuino speed is probably the more accurate one. Analog speedometers can be off, especially if your viewing angle is not the same as the intended one.

Our Yaris, for example, has the gauge cluster in the middle of the dashboard, not right in front of the driver. So, when the needle is straight up, at around 60MPH, it looks like it's around 64MPH for the driver, but 56MPH for the passenger.

We just took a trip with a GPS, and I ended up using that as the speedometer for dialing in highway speeds. If I had an MPGuino or SGII in that car, I would use that as the speedometer. In my Tercel, I use the MPGuino, but that's because I know the gauge is off anyway.
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