Quote:
Originally Posted by ps2cho
Full tank -- reset trip meter. Fill up and divide miles driven by gallons. Pretty accurate.
I'll follow the trip meter with a GPS...but they are pretty accurate.
This is with the stock 15" wheels.
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You need to check your odometer over a measured 25 to 50 miles if you are using the GPS.
If it is that close, it probably will not matter. When you get into errors of 10% to 20% it starts to add up.
As an example... My current MB has a speedometer that reads right on the money according to GPS. BUT, over a measured mile there is a 20% error in the "odometer". IE: If I figure my mileage by these indicated figures pump/odometer = 21 MPG. If I correct if for my wrong odometer gear, my actual MPG is 26 and almost 27 MPG driving like a bat out of hell.