Winter mpg - What do you get?

[1G_DSM]

I'm not too happy with my winter mpg and I'm wondering what everyone else gets. I drive a bone stock automatic 94 Eagle Talon TSI AWD. I'm rated at 17 city, 20 hiway from the factory. Right now I average only 17.5'ish mpg. I pump only BP 93 and I always warm-up and cool-down my car. I tried removing my spar tire and jack to reduce some weight but I don't think that helped very much. I also bumped up my tire pressure to 36psi. I don't think that helped very much either. I drive like a grandma and still only manage like 17.5 mpg :'(