[Patman]

Have you checked your tire pressures lately? Did you hit anything that might have thrown the alignment off? Are you carrying more cargo/passengers than you used to?

Another thing is that your E0 gas got diluted down to E10. That would cause a drop in fuel economy.

Definitely check your tire pressure. I have been running @ 32 PSI and I have barely topped 35 MPG with my Eco. The other day I checking my PSI after getting (so so MPG and increased to 40 PSI and put in a tank of 93 Octane BP and just returned with my MPG up @ 4 miles per gallon after driving from Cinti to Dayton and back and other misc driving.

 

[Patman]

I had a customer who was dealing with poor fuel economy, needed a locking gas cap. You could have the dealer check the fuel trims but really I agree the short trips are murder on MPG's, highway or not. Take it out on a long trip and see what she gets.

I bought my Eco and my avg trip is @ 2 miles to my bus stop for my park and ride. When I do that, my Eco gets @ 30. I have been complaining about my car with less than par MPG. This past week I inflated my tires to 40 and took some "road trips" and I have been averaging @40 far better than I have ever done before. One bad tank is not going to decide whether the car is good or bad. I was thinking I had a MPG lemon until I was able to get out on the hwy and set the cruise at 65 - 70. After I did that the MPG went up and I don't think I have a problem car any more. I am now waiting to see if the tune will improve that even! After seeing the MPG results with my car I decided to inflate my wife's Malibu to 35 instead of the recommended 30 to see if we see any MPG improvements there even.