Any advice for mountains?

[jjonrofl]

Hello all! I am new to the forums!

I drive a 2009 3-dr auto Yaris liftback and I don't seem to be getting very good mileage... I live in the mountains so I do tend to drive up and down hills a lot. My last tank average was 30.5mpg, but it was because my tire pressure began going low and at the end of the tank the light came on. They were at 22PSI and now I am at 32PSI. I only have about 2600 miles on the car, as I got it new in August.

Does anyone have any advice about driving on mountains and hills? Also, I read somewhere that when waiting at a light, I should either turn off the engine or switch to neutral. Should I switch to N when waiting? Are there any consequences to this? I just want to get better mileage :( The best I've gotten before this is 33mpg with 70% city and 30% highway.

PS- Even though I haven't gotten fantastic mileage yet I loove the yaris and I think it's a blast to drive and I've gotten lots of compliments on it.