Timmer

the mpg reading on my 06 is right on the money, how did i get so luckey? anybody eles over head read right on the money as far as MPG?

drolex

What's your MPG?
The accuracy may depend on how you drive it. Maybe the new meters are better now. Maybe people aren't calculating correctly. They may be inaccurate because it's just averaging a bunch of real-time measurements. In theory that should work, but maybe they don't sample the rate frequently enough. Maybe the measuring device isn't accurate in the first place.

06RAMCTD

My overhead is within .5mpg of hand calculated no matter how I drive or what I tow. I always top the tank to the filler neck each time to ensure the calculations are right.

Christov

I am pleased with mine as well. The reset **** if NOT pressed when you fill up will continue averaging from its existing average. My truck IS still stock however.

BigHornCTD

Ever since day 1, mine has always read about 1 MPG high. The last fill up, it was dead on. Beats me, nothing changed between fill ups.

DBLR

My overhead computer always reads less that what I calulate by hand. It is any where from 1-3.5 mpg on the lows side so its ok with me as I like it when I get better mpg then it shows.