I just filled up today and I got 238 miles out of a full tank. I always run to near empty before filling up to gauge this. Not a bad tank full for me
For that Canadian guy who gets such low gas mileage...what RPM are you normally cruising at? Do you have alot of stop and go traffic (oh wait, it's Canada so no)? One thing to consider is that gas mileage is worse in the winter with turbo cars from what I understand.
I think you need to make sure your wife/roommate/girlfriend/kids aren't taking your keys when you go to sleep and taking the car for a spin.
Do they give you lots of wine or warm milk and say you look sleepy alot?