Join Date: Sep 2009
Location: Brownsville, TN U.S.A.
There are a couple of factors working against you. The winter blend and the winter temps. The cold brings denser air, which takes more power to overcome. This, combined with winter blend gas, cut hurt mpg bad.
To get a good idea if anything else is wrong we need to know the following:
1. What percentage of your driving is in the city vs. hwy?
2. Do you warm up your car before you drive it?
3. Do you sit in your car with it running for extended periods of time?
4. What kind of mpg did you get in the summer?