Quote:
Originally Posted by lapeer20m
I do not have a scanguage. How inaccurate is the stock "instant mpg" gizmo built into the suburban?
As far as speed, I plan to cruise around 65 mph which is 5 below the limit.
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I have no clue. They usually are off by, I don't know, plus or minus 10%? I've heard (absolutely no scientific data) Hondas are a little low, Toyotas are a little high, Dodge trucks, well it doesn't matter since they get such terrible mileage (I love Dodge trucks, but they don't do well in the MPG department!!).
The Scan Gauge is more accurate and can be adjusted as you fill up to make it even more accurate. You can also use it to view other parameters, such as trip mpg, load, temps, etc. It is really helpful to have instant mpg or load as a guide to help adjust your right foot and trip mpg to see what you are doing overall.