I am visiting cold cold Canada for most of the winter, coming from North Carolina. I have expirienced about 20% drop in milage (was 310 miles per tank, now its at 160) since we have arrived Canada. We have put winter tires on it and the car idles some mornings to warm up, but 20% fuel economy loss seems excesive. We only bought the car 5 months ago and have had no other problems. Can anybody give me an idea of what could be wrong? Thanks,
Ed
PS- we love the car!