I have a 2009 Toyota camry hybrid. It has considerable electronics including a pretty useless NAV (cant do anything while driving). But my car computer ALWAYS reports a higher gas mileage than I calculate when I purchase gas and fill up the tank. I have spoken to the dealer several times, and they “took it for a ride” and pronounced the computer fit. But after 5 years and many gasoline purchases, I can say
with EVERY purchase of gas, the calculated mileage is LOWER than the reported mileage. EVERY ONE.
If this were a random thing owing to different fill levels, then I would expect that the calculated mileage would be higher than the computer’s calculation. But never have I calculated a higher mileage based upon my purchase.
So I have to wonder if this is a conspiracy by Toyota to make their product look better than it actually is.
I have gotten NO help from Toyota, either. In fact, it seems that they just do not understand the issue.