Along those lines, make sure that your air conditioner is displayed "AC-off", as it could be on (even in cold weather) in all other settings.

Honestly, my mileage has been pretty crappy too since the weather got cold. I'm lucky hit 50mpg on in the cold mornings and the high 60mpg commutes home are now a distant memory. It's enough to make me consider an engine block heater...

Commuter car, grocery getter, and summer road tripper--average 10k miles per year.


Winter road trips and ski trips, bad weather commuter and my wife's "daily" driver--expected average 4k miles per year.