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Originally Posted by David Price
I just checked my speedometer & odometer with a Magellan GPS 315. The speedometer was low by 3 mph with cruise set at 70. The odometer was also low but by only 0.9 miles over a 61 mile trip.
Note: The Magellan GPS 315 is not a certified unit. |
Are you saying that your car's speedo read 67 when the GPS indicated 70, or did the speedo read 70, (cruise set at 70) and the GPS indicated 67? The later is what most of us have experienced, I believe, and would indicate that your car's speedo is reading higher than actual speed.
Your odometer test shows virtually the same as mine, 1.5% low.