Originally Posted by badliutenant
On My first tank the computer recorded a 35 mpg with a calculated mpg of 32.5. All tanks since then have gone steadily down with the computer saying 33 to 32 and calculated being about 30. My last two tanks the computer has struggled to read 30 mpg and calculated mpg of 28. I am at a loss to explain this and am very disappointed in this slide into mediocrity. I suspected my mileage was not going to live up to expectations when on a long highway trip I could do not better then 33 at 70 mph. I know mileage drops off significantly after 65. My driving style has not changed and I try to implement some hypermilers techniques when possible. I have not taken this to a dealer yet and I suspect they will say everything is fine.
It is fine, look at the EPA window sticker that was on the car when it was sold, and remind us what the number in the middle of your sticker reads -- it will be the number under the following text "Combined Fuel Economy This Vehicle
If you are on your third tank of gas you are also complaining about MPG while you are still breaking in the engine. You need to break the engine in before you can get reliable information about the overall MPG your car will yield.