I'm currently doing about 35mpg on average since I bought my Mazda3. This includes in town driving to work and also drives out in the country ranging from 55 to 85mph (you know, just to see what she'll do Some driving with air conditioning, some driving where I'm in "manual" mode on the shifter, basically a little bit of every kind of driving. I've really driven it hard and still come out at 35mpg over the first 1000 miles of her life.. Whenever the fun driving wears off and I start getting serious about saving fuel, I'm sure I could easily average over 40. I'm loving this car.