We have less than 500 miles on our new Odyssey and the fuel economy is less that what we expected. We are getting about 12 MPG in mixed driving (hwy and city). I have checked the easy things, but am wondering what else could be wrong. We do realize that we are in the break-in period and we are babying the van (no jack-rabbit starts).

I would like to be a little educated before taking it to the dealer.