Joe,In response to your question,I only had one trip with the 2001 Marathon pulling the Chevy PU and on that trip I got 5.3 MPG.We were on the same trip from Florida to NC and we ran as much as 10 MPH over the speed limit.If I remember correctly it seems like without towing I always got at least 1 MPG greater.The 2001 would get over 7 MPG at 65-70 MPH without towing the toad.Jerry might be able to chime in here,how bout it Jdub?