It has been cold here lately in Northern California, but I have been working to improve my mpg. I did the grill block which definately helped. Other things I am doing differently; -I am reducing my highway speed by a few mph. I try never to exceed 65mph and generally stay under 60. I used to go up to 70+. I figure that this will only increase my drive times by a couple minutes. In the realm of things, I can give up a few minutes for a few mpg. I stay in my place though. Generally in the lane next to the far right lane. It is also much more relaxing. -I use EV mode for my first couple of minutes of driving. I use it to get through my initial stop and go driving in my neighborhood. I found that that initial warm up of the ICE wastes a bunch of gas, and it makes it hard to make up for that first bit of bad mpg. -Concentrating on planning ahead a bit more. Gliding to stops. Using a well planned single engine pulse between stop signs. -I turn off the climate control when in stop and go traffic. It tends to force the engine to run in order to keep the heat on. Once I start cruising, I turn the automatic climate control back on. Right now I am at 53mpg for the 150 miles that I have on this tank. My previous winter mpg averages were about 45mpg. WOOT!