Previously, I've stated that I wasn't completely happy with my fuel mileage. To date, my best mileage has been 25 MPG highway. I believe part of that is due to the speed limits in this part of TX being mostly 75 & 80 MPH. I now have about 4700 miles on my Lariat Long Horn 4X2 and my MPG has suddenly dropped. I was getting a solid 22-23 MPG for daily commuting. Now, my MPG is down to 18-19 MPG for the same drive. What could be causing this? Nothing is changed, no towing, no EVIC warnings, nothing. I've got that gut feeling I have a lemon with a nice helping of douche nozzle customer service. The selling dealer wont return my calls or even book a service appointment to look into it. Have I made a $50,000 mistake by going with this Ecodiesel vs. the reliable and proven VW/Audi diesel I was originally looking at? ****, I think I've heard of less issues with the Chevy Cruze diesel!