I'm guessing the Traverse will be in the same EPA range as the other lambda models (17-23). But I have read on some other forums of owners getting a very wide range of real life mileage on this, e.g. 9 and 13 MPG on the Acadia. Does anyone have any thoughts on this?? I am really interested in the Traverse and I can live with 18-20 MPG, but I can't live with 13. Thanks.