My point was that for the people that just enter the MPG figure from the trip computer this will cause the database figures to be skewed higher than they actually should be since the trip computer is always higher by as much as 3mpg per tank, thus making the AVG MPG for the database slightly higher. I know I am probably being anal about this but it was just something I was thinking about as I was figuring out the profitability and efficiency of my TCH vs. my previous vehicle. A few MPG over the course of a year does add up and make the numbers significantly different. If I used the numbers provided by the trip computer then it would look like I was saving more money than I actually am, which would then make the amount of time to witness my ROI shorter when in fact it's not.

Is it going to make a significant change to the database? I don't know, probably not. But, then again it might.